F32 | F33 | F36 (2013+)

Most owners start with lowering springs or coilovers to improve the stance and body control, uprated brake pads and discs, and new bushes on higher-mileage cars. On turbo petrol models an intake improves sound and response, while diesel owners tend to focus on chassis, wheels and interior upgrades such as an M Sport steering wheel with paddle shifters. Choose parts listed for your exact body style, as the Coupe, Convertible and Gran Coupe differ in places.

Many do. The F32, F33 and F36 share engines, much of the braking hardware and many interior parts with the F30 3 Series. However, the 4 Series sits lower and has different suspension settings, and the post-2017 LCI Coupe and Gran Coupe received stiffer suspension. Brake disc sizes can also differ by year and package. Always use body-specific fitment for springs, coilovers and brakes. Every R44 product lists the models it fits, and My Garage filters the range for your car.

Yes. BMW's adaptive (VDC) dampers adjust damping only, so lowering springs can be fitted while keeping the adaptive function. Fitting coilovers replaces the adaptive dampers, so an electronic cancellation kit is needed to prevent warning lights. The F33 Convertible is heavier than the Coupe, so springs and coilovers are often specified separately for it, and xDrive cars use different parts again.

Yes, within reason. Diesel 420d and 430d models respond well to suspension, brake, wheel and interior upgrades, and remaps are popular for extra mid-range torque. Early 420d models (2013–2015) use the N47 engine, which has a known history of timing chain wear, so a documented service history and checking for rear-of-engine rattle are worthwhile. The B47 engine that followed from 2015 is generally regarded as the more robust unit.

Brakes vary across the range. Four-cylinder cars without the M Sport brake option use smaller single-piston calipers, while the 435i, 440i and M Sport brake packages use larger discs and multi-piston calipers. Performance pads and quality discs are an effective upgrade for road use, and a big brake kit adds heat capacity for track days. Check your disc size and wheel clearance before buying, as larger kits typically need at least 18-inch wheels.

UK insurers usually require you to declare modifications that change performance or appearance, including remaps, suspension, exhausts and wheels. Failing to do so can invalidate a claim. Specialist insurers for modified cars are often the simplest option. Most F32s are now outside BMW's original warranty, but if you have a used-car or extended warranty, check the terms before changing engine software. Keep invoices and fitting records for every part.