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    If you’re looking for the ultimate everyday machine that’s also capable of embarrassing junior supercars then you should check out Birds’ wonderful 435d. Words: Bob Harper. Photography: Gus Gregory.

    / #BMW-435d-xDrive-F32 / #BMW-435d-F32 / #BMW-435d-xDrive / #BMW-435d / #BMW-F32 / #BMW / #BMW-4-Series / #BMW-4-Series-F32 / #BMW-4-Series-Coupe / #BMW-4-Series-Coupe-F32 / #2017 / #Birds-B4 / #Birds-B4-F32 / #Birds-F32 / #BMW-435d-xDrive-Birds-B4 / #BMW-435d-xDrive-Birds-B4-F32 / #BMW-435d-Birds-B4-F32 / #BMW-F32-Birds

    Birds’ stunning #BMW-435d-xDrive . Everyday Weapon Birds’ 435d can be either a mild-mannered pussycat or a ripsnorting road warrior.

    Depending on which order you’ve read the features in this month’s issue you might have spotted a recurring theme, that of traction. The M235i we drove suffered from a lack of it to a certain extent and the two big power M6’s pace was really hampered by an inability to transmit their prodigious thrust to the greasy Tarmac. Put simply, none of these three cars would have seen which way #Birds ’ innocuous-looking 435d went had we driven them back-to-back on typically slick UK winter roads. Not only is this car devastatingly quick, it also has the ability to be so no matter what the conditions.

    I must admit that I’m not normally a huge fan of the ‘Luxury’ trim level that BMW’s foisted on us for the past few years, and it would seem that I’m not alone – the new G30 Five won’t be available as a Luxury model in the UK and neither will the face-lifted 4 Series Coupé that you can read about in our News pages. The bottom line is that hardly anyone was buying the Luxury trim models. Maybe I’m a marketing man’s dream, but I’m a succour for the chunky M Sport styling and now I’m in a position that I’ll be looking to buy my own wheels again I’m drawn to the M Sport kitted used examples like a moth to a candle despite knowing that the equivalent SE will be cheaper to buy and will ride better too! Having said all this I’m also secretly drawn to this Birds car – yes, I know it’s a Luxury, but look at it, it’s just so innocuous – no one would expect it to be a candidate for the ultimate everyday weapon, and in the right conditions a supercar humbler.

    We’ve always been impressed with machinery that’s been fully-fettled by Birds as MD Kevin Bird doesn’t do things by halves. While he could simply fit a range of off the shelf tuning products he’d be the first to admit that would be selling his customers short. Sure, there are some parts that can be simply fitted to make an improvement, but to do things properly Kevin always buys a demonstrator to which he can experiment with until he’s happy with the outcome and can then pass on that knowledge to his customers in a series of suitable upgrades safe in the knowledge that the car will be right straight from the word go.

    The F3x generation of 3 and 4 Series have been with us for a while now so Kevin’s had quite a while to perfect his upgrades for the car, and without a doubt he’s spent the most amount of time on the car’s suspension as he feels that BMW has lost the plot to a certain degree with its most recent F-prefix cars. He’s not a fan of the adaptive dampers as they never seem to offer the right reactions when extracting the performance from the car – they may be fine for providing a comfortable ride when you’re in cruise mode, but so can a passive set up if it’s properly designed and set up.

    After having looked at just about everything the aftermarket had to offer Kevin embarked on the process of having a suspension set up designed to his specifications. While Kevin knows how he wants his cars to perform he’s happy to admit that he doesn’t have the knowledge required to draw out a damper curve for a suspension specialist to work with so he’s enrolled the help of chassis engineers to assist him in the quest for the perfect set up. We’ve had a chance to sample this work on a couple of cars and have always come away impressed, and it was no different on this 435d. Springs and dampers have been attended to and the result is a machine that resists understeer far more effectively than before and one which engenders a real feeling of confidence in what the car’s response is going to be to any given input.

    We’ll look at this a little more in a minute but for the time being let’s have a quick look at what else has been installed on Birds’ B4-35d demonstrator. It’s perhaps a sign of the times that diesels are able to develop pretty high power outputs to go with their prodigious torque capabilities and perhaps because of this BMW to a certain extent holds back the outputs of its twin-turbo diesel motors. Straight out of the box the 435d develops 313hp and 465lb ft of torque but after its been treated to the Birds engine management software upgrade we’re looking at an altogether healthier 380hp and a monstrous 575lb ft of torque. Kevin has looked at the various tuning boxes on the market and has concluded that he prefers to have the software reprogrammed as it gives you more control on what changes are being made. Additionally some tuning boxes only really deliver once you’ve applied at least 70 percent throttle, and with these turbo diesel lumps offering so much low down the rev range it’s nice to be able to access the additional performance on part throttle.

    From the power and torque figures you don’t need to be a rocket scientist to glean that this is going to be one very rapid 4 Series so Birds has taken the sensible step of offering a brake upgrade on the car too. Birds recommends a 19-inch wheel on the 4 Series and this allows the fitment of its #Alcon 365x32mm discs, gripped by six-piston callipers. This set up features grooved discs, low weight alloy hubs and lightweight callipers and Birds reckon they allow excellent retardation from cold all the way up to the highest temperatures they can generate. On the subject of wheels and tyres it’s worth noting that the first thing Birds would recommend is ditching the runflats if your car is so equipped as the benefits of any suspension work will be negated if these are retained.

    The kit we’ve so far discussed – springs and dampers, a set of 19-inch non-run flats, the performance upgrade and the Alcon brakes – are packaged together by Birds as what it terms its complete conversion for the 435d and while it might look a lot at a smidgen over £8000 (including all parts, labour and VAT) it offers to transform the performance of your 3 Series or 4 Series. Quality components don’t come cheap and it’s also worth remembering Birds offers a 24-month warranty on complete conversions so obviously has complete confidence in the products it offers. For those wishing to add additional items – such as anti-roll bars or a Quaife limited slip differential – these can again be bundled together as part of a package or added individually as the customer wishes. One of the joys in visiting Birds is that the company accepts that each of its customers may have slightly differing requirements and is happy to tailor its products and advice accordingly.

    The proof of the pudding is in the eating though so we set forth from Birds HQ to cruise up the M40 to our photoshoot location where some challenging roads await. Obviously we’re expecting it to perform well when the going gets tough, but in order for the Birds car to fulfil its duality of purpose it first needs to be able to demonstrate that it’s a usable everyday machine in cut and thrust traffic. Initial impressions are favourable with the eight-speed auto quietly and unobtrusively doing its thing in the background while tickling the throttle every now and then is accompanied by a meaningful shove in the back, even on part throttle loads. Having just stepped out of a car sitting on much smaller wheels and with no pretensions to being a sporting machine the ride does, at first, seem to be a little on the hard side but as the miles pass under the 435d’s wheels we become accustomed to the slightly firmer than standard set up and end up not being able to fault the car’s behaviour on the motorway. It rides the crests and troughs very well, always seeming to be able to complete its movement before hitting the next bump or road imperfection whereas sometimes in a normal BMW you’re left with the feeling that the underpinnings are still trying to deal with one road imperfection when it hits the next which can have an unsettling effect.

    Pulling off the motorway and onto some more demanding roads and the 435d demonstrates what a devastatingly quick cross-country machine this can be.

    There’s power and torque seemingly everywhere in the rev range and you can have the choice of using delicate and measured inputs to ride the wave of torque or being a bit more brutal in which case the eight-speed auto drops cogs with alacrity and flies you up the road, slurring one ratio into the next as only that #ZF ‘box can do. And it’s at this point that you realise you haven’t dialled in Sport mode and once you do there seems to be a whole new level of performance to dip into.

    At which point one is invariably really travelling so it’s reassuring that those Alcon brakes can wash off speed without breaking into a sweat – the pedal feels is very reassuring and even on the slippery sections of road we encounter it resists the temptation to trigger the ABS very well. Invariably though once one has knocked a chunk of speed off the dial when tackling the corner that one wanted to slow for it becomes apparent that you’ve actually washed off too much speed and that the 435d could corner much quicker. In fast sweepers the chassis inspires real confidence, gripping hard and resisting understeer very effectively while it’s a similar story amongst the tighter stuff, too. The front end clings on for dear life and the only thing you really have to do is to remember to get onto the throttle earlier than you would in an equivalent rear-wheel drive BMW so you can bring the front axle’s drive capabilities into play, and when you do you can feel the front end pulling you through just as the rear tyres start to scrabble for grip. It’s deeply satisfying and we can’t really imagine that there are all that many machines that would show this 435d a clean set of exhaust pipes, especially on these tight roads where a bigger machine would struggle somewhat.

    Once we’ve finished playing and got a set of pictures in the bag it’s time to head home and sample the car’s cruising abilities once again. Snapper Gus gets behind the wheel and once we emerge back at Birds HQ he’s got a big smile on his face and concludes “That’s quite a weapon isn’t it.” Quite so. Swapping back into my everyday car I couldn’t help but feel how sloppy and stodgy it felt, it had felt fine in the morning!

    This 435d is currently up for sale at Birds so if you fancy a stunning everyday supercar slayer that will pass quietly under the radar we’d very much urge you to get in touch. We can’t imagine it’ll hang around for long…

    CONTACT: #BMW-F30-Birds / Tel: 01753 657444 / Web: www.birdsauto.com

    There’s power and torque seemingly everywhere in the rev range

    Birds-B4 component prices

    ENGINE MANAGEMENT SOFTWARE 380HP: £2106
    B4 XDRIVE ANTI-ROLL BAR KIT: £914
    QUAIFE BMW LSD CONVERSION: £1605
    B4 SPORT SUSPENSION: From £1723
    EXCHANGE QUAIFE BMW FINAL DRIVE: £1710
    SPORT SUSPENSION SPRINGS: £679
    ALCON AE BRAKE KIT FRONT, 365X32: £2862
    ALCON AE BRAKE KIT REAR, 343X28: £2377
    OZ WHEEL & TYRES SET: POA
    Please note: All prices quoted within this panel refer to components fitted individually not as part of a B4 Dynamic Package. Prices include parts and labour but not VAT.

    / #Birds-B4-Package prices
    B4-3.5d 380HP COMPLETE CONVERSION: £6803
    Engine management software, Alcon 365mm front brakes, B4 Sport suspension, 19-inch non-run flat tyres
    B4 DYNAMICS PACKAGE 1 £2312
    B4 anti-roll bar kit, Quaife LSD
    B4 DYNAMICS PACKAGE 2: £3096
    B4 anti-roll bar kit, Sport suspension springs, #Quaife LSD
    B4 DYNAMICS PACKAGE 3: £4039
    B4 anti-roll bar kit, B4 Sport suspension, #Quaife-LSD
    Please note: All prices quoted with this panel include parts and labour but not VAT.
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    THE MPRESSIONIST 470hp 1M-kitted 135i / HARDCORE 135i 470hp, #1M-kitted beast

    With 1M looks backed-up with a lot more than 1M power, what was once an unassuming 135i is now a package of pure muscle. Words: Elizabeth de Latour Photos: Matt Richardson

    Fitting the 3.0-litre, twin-turbo, straight-six N54 engine into the 1 Series Coupé is one of the best things BMW has ever done. The engine amazed when it first appeared in the E9x 335i thanks to its combination of huge torque spread, impressive top-end, and stirring soundtrack (despite the presence of two turbos to muffle the exhaust note). And then BMW decided to stuff it under the bonnet of the smaller, lighter 1 Series Coupé creating something of a performance hero. But the story doesn’t end there because a couple of years later BMW came out with the 1M, with the E9x M3 running gear crammed under those swollen arches, more power and more attitude, this time creating a performance icon. These days you can pick a 135i up for about £10,000 whereas you’d need about £40,000 to get your hands on a limited edition 1M. Of course, the 1M is a very different prospect when compared with a plain Jane 135i but certainly as far as performance goes there’s hardly anything in it. And once you’ve whacked a remap on the 135i it’ll be the quicker car, if that’s what you’re interested in. Of course, there’s nothing stopping you from buying yourself a 135i and building it up into something that’s even better than a 1M…

    Meet Sachin Patel, a man who’s done just that. And while he’s got a fair bit of cash invested in his long-term love of a 135i, he’s built this beast of a 1 Series for less than stock 1M would cost to buy. It’s packing some serious firepower, enough to refuse to be intimidated by all but the most heavyweight high performance machinery. And, of course, pouring money as well as your heart and soul into your BMW is just part of everyday life when you’re a lifelong fan of Bavaria’s finest.

    “Actually, I was never a BMW fan,” says Sachin. Oh well, scratch that then. “I lived in West London and saw so many so I wasn’t really interested in them at all. That all changed, though, when I drove a 120d. I was really impressed by it. I was looking for a small, powerful car that was also economical and when I read Jeremy Clarkson’s review of the 135i I was sold and went and bought one.”

    Sachin always knew he was going to modify his 135i and the first item on his list was more power, because when it’s so easy to extract it would be rude not to. In order to ramp up the power the 135i was treated to a remap, along with an induction kit and a pair of uprated diverter valves. This was enough to nudge power up to the very high 300s and plenty to be getting on with. Sachin also decided to give his chassis a bit of a tweak with the addition of some thicker Eibach anti-roll bars to improve its cornering abilities. And that was enough to satisfy his needs for mods for a while.

    “After I’d had the car for about four or five years I decided to sell it and move onto something else,” says Sachin. “A prospective buyer came over one day to have a look at it and said that he was going to put a 1M kit on whatever car he bought. It sounded like such a good idea that I removed the car from sale and started looking at getting the 1M kit done myself. I called MStyle, said I wanted a 1M kit, and everything snowballed from there.”


    The transformation was no gentle transition, though. “The styling went from standard to this in one go!” Sachin exclaims. That’s one hell of a transformation. The kit is a Prior Design M wide-body kit, consisting of front and rear bumpers, side skirts, wider front wings and wider rear quarter panels. It’s comprehensive and means that this 135i looks every inch the 1M that inspired its makeover. Now, the kit on its own is awesome and Sachin could have left things there and been extremely happy with the results, but he didn’t. At the same time as the kit was being added a whole host of other styling additions were thrown into the mix to take the car to the next level. Up front there’s an MStyle carbon fibre vented power dome bonnet, a full-length carbon front splitter, and #BMW M Performance gloss black kidney grilles. Then you’ve got the 1M door mirrors, a carbon boot spoiler and carbon fibre rear diffuser from #MStyle , plus LCI Darkline rear lights. These elements are all pretty subtle compared to the impact of the body kit but they definitely add the perfect finishing touches.

    Originally, Sachin’s 135i had been white but with its transformation to a wide-body monster it needed a fresh new look. “I’d decided I wanted a matt colour and was debating between black and grey,” he says. You can see which choice won in the end, with the car now finished in stunning Frozen grey. It’s a gorgeous colour that accentuates all of the car’s lines and gives it an otherworldly look. In addition to the Frozen grey bodywork the roof has been painted gloss black, which offers a nice contrast. With the new body kit there was no way that the M Sport wheels that the car had come with would cut the mustard any longer, nor were they beefy enough to fill those fat arches, so the hunt was on for a new set of rims that would be up to the job. Those wheels are Forgestar F14s, forged 14-spoke affairs which are, usefully, available to order in some serious widths and with astonishingly deep concave designs. Indeed, the 9x19” fronts are labelled Deep Concave while the 11x19” rears are what Forgestar calls Super Deep Concave, and that’s no exaggeration, the spokes disappearing deep within the wheel before they hit the centre. With a kit as wild and wide as this you really need to make sure your wheel choice won’t be overwhelmed by those massive arches and that it is capable of delivering its own brand of wow. Well the Forgestars definitely deliver on that front.


    With Sachin’s styling plans accomplished, he decided to look at getting a bit more power out of the N54 as, while the 135i was quick, there was still a lot of untapped potential. And who better than MStyle to help tap it? As such, the engine has been fitted with a Mosselman MSL 500 turbo kit, Mosselman twin oil cooler kit and oil cooler separator. There’s also an induction kit, uprated intercooler, uprated low pressure fuel pump, cat-less downpipes, a de-cat centre section with a custom quad exhaust system, and the whole lot is topped off with a Mosselman Stage 3 remap. The end result?

    A dyno-proven 470hp with a thumping 480lb ft of torque, huge gains that deliver equally huge performance and really push what was once a humble 135i to the next level.

    Up until this point Sachin was still riding on nothing more than the stock suspension with the only handling aids being those Eibach anti-roll bars, so that needed to change. MStyle recommended coilovers so he whipped his wallet out and opted for a set of BC Racing height and damping adjustable items with matching front camber adjustable pillow ball top mounts. “It rides and handles brilliantly now,” says Sachin, “and there’s so much grip it’s actually scary!” He’s has kept the standard callipers because they’re pretty massive, with six-pots up front, but they’ve been given a lick of orange paint which really makes them stand out against the black wheels and grey bodywork.

    Inside you’ll find red leather, which looks equally good against the exterior, with carbon trim and a BMW M Performance gear knob, Alcantara gaiter, and matching Alcantara handbrake gaiter. Since the shoot Sachin has added an M Performance Alcantara steering wheel with shift lights and a digital display. He is now thinking about fitting a pair of M4 front seats, which would look awesome.


    As we finish up our shoot, Sachin asks if I’d like to take the 135i it out for a spin. I grab the key off him with such ferocity he’s lucky he’s still got a hand left. The first impressions behind the wheel are defined by the stubby gear knob, UUC short-shift kit, and UUC Stage 2 multi-puck ceramic clutch.

    It all feels a bit sharp and snatchy for someone who’s just jumped in the car for the first time, so I’m gentle with the clutch and gear change and it’s clear that you’d very quickly get used to the combination and drive it as smoothly as any other car. What a short-shift kit does do, though, is make you want to drive fast and rip through the gears – so that’s exactly what I do. The performance is awesome! It’s the torque that really gets you. There’s so much of it spread over such a wide rev range that it’s always there when you put your foot down. When you do the 135i just explodes forward. It’s incredible and makes this car ridiculously rapid. It takes no effort to find yourself travelling far more quickly than you ever had any intention of doing. The mid-range is so astonishing that you find yourself shortshifting, which drops you right back into the torque plateau, but when the opportunity arises I keep the throttle pinned to get a taste of the top end and it doesn’t disappoint. There’s no let up in acceleration and the power just keeps on coming. When you tap into that heady top end the car feels ferocious and furious and it’s addictive.

    The ride is firm but compliant and the chassis feels taught and precise, the 135i cornering hard, fast and flat, while the brakes feel strong with plenty of feel through the pedal providing massive stopping power. Oh, and it sounds good, too. Really good. That fully-decatted exhaust really lets that straight-six sing. It’s a great noise, the icing on a very fast cake indeed.

    “I’m very happy with the car,” grins Sachin as I hand back the keys, though perhaps that’s why he’s smiling. “It gets lots of attention. I’m actually surprised just how much. It’s got the look I’ve always wanted and it’s the car I’ve always wanted.”

    What Sachin’s done is taken a good car and made it great, which is the ultimate modifying goal. And when the end result is as impressive as this, that’s something you can be truly proud of.

    Interior features carbon trim, a shortshift kit and red leather, which looks great against the grey exterior; orange brake calipers add a flash of colour.

    TECHNICAL DATA FILE #BMW-E82 / #BMW-135i / #BMW-135i-E82 / #N54 / #BMW-N54 / #Mosselman-MSL500 / #Mosselman / #UUC-Motorwerks / #N54-Mosselman / #BMW-135i-Mosselman / #BMW-135i-Mosselman-E82 / #Mosselman-Stage-3 / #BMW-1-Series / #BMW-1-Series-E82 /

    ENGINE 3.0-litre twin-turbo straight-six #N54B30 , #Mosselman-MSL500-N54-turbo-kit , twin oil cooler kit and oil cooler separator, induction kit, uprated intercooler, uprated low pressure fuel pump, cat-less downpipes, de-cat centre section, #Mosselman-Stage-3 remap

    TRANSMISSION Six-speed manual gearbox, #UUC-Motorwerks-Stage-2 multi-puck ceramic clutch, UUC Motorwerks double-shear Evo short-shift kit

    CHASSIS 9x19” (front) #Deep-Concave and 11x19” (rear) #Super-Deep-Concave-Forgestar-F14 forged wheels in gloss black with 245/35 (front) and 285/30 (rear) Continental ContiSportContact 5P tyres, #BC-Racing height and damping adjustable coilover kit, #BC-Racing front camber adjustable pillow ball top mounts, #Eibach anti-roll bars, brake calipers painted in custom orange with M decals, #Quaife-LSD

    EXTERIOR Prior Design M wide-body kit consisting of front and rear bumpers, side skirts, wider front wings and wider rear quarter panels, painted MStyle carbon vented power dome bonnet, MStyle full length carbon fibre front splitter and carbon fibre rear diffuser, BMW M Performance gloss black kidney grilles, OE 1M air ducts and arch liners, OE 1M door mirrors, MStyle custom quad exhaust, SuperSprint quad tailpipes, MStyle carbon boot spoiler, full respray in Frozen grey, roof painted gloss black, Darkline E82 LCI rear lights

    INTERIOR #BMW M Performance gear knob and Alcantara gaiter, #BMW-M-Performance Alcantara gaiter for handbrake

    “It rides and handles brilliantly now… there’s so much grip it’s scary”
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