18 Exhaust

Read the full review by EVO by clicking on the pictures below or by following this link: https://www.evo.co.uk/bmw/m140i/202709/birds-bmw-m140i-review-british-tuner-tweaks-bmws-rear-drive-hot-hatch

We bought our M140i because this is the last manual non-M car!

It's to be kept by Birds as a landmark in the history of BMW drivers' cars. It represents the pinnacle of BMW’s endeavours since the 1970s to create the ultimate driving machine. In our opinion, the disappearance of the true drivers' car is a consequence of a hugely misguided emissions strategy for the motor industry, and we think no cars built since 2019 will have the attributes required by those of us who enjoy driving.

Autocar and Birds have collaborated over the past 6 months on a project car, a BMW F21 M135i, by upgrading many different aspects of the model which are all included in the Birds B1 Complete Conversion package.

The contents of the Birds B1 Complete Conversion:

Kevin

Just a quick note to thank you and your staff for the work done on the car, it does indeed feel a different vehicle, the crashing about over bumps and jumping around has disappeared, the engine throttle response is much improved as is the power.

I got back here last night around 10.15pm, hoping I have not triggered any bloody speed cameras.

All being well I will return the car to you early on the 9th March for the brakes, if its ok I will wait while they are done, I can always go for a walk to pass the time.

"Working with BMW tuners Birds, we’re going to replace the standard, under-specified suspension with much higher-quality Bilstein components tuned specifically for the M135i, we’re going to fit a Quaife limited-slip differential and we’re going to lift power to somewhere approaching 400bhp. We might yet make a few other modifications, too..."

As another exciting year at Birds comes to a close, we take a look back at some of our most notable achievements, new product developments, and what's in store for what's sure to be an interesting 2018...

Devising a demonstration

"Without exaggeration, the B2 conversion is transformative. There’s more composure in the ride quality and the uprated suspension is much better equipped to deal with uneven roads. The car actually smothers and absorbs the road surface rather than lolloping about all over it, giving you real confidence..."

Read more on Autocar's review of our Birds B2 M235i by following the link below!

See Autocar's review of our M235i here