
The chassis code of the BMW M4 is F82, while the chassis code of the BMW M3 is F80. The BMW M4 is essentially the coupe version of the BMW M3, and the chassis of these two models is almost identical, which is why the chassis codes of the BMW M4 and BMW M3 are related. The engine and transmission used in the BMW M4 are the same as those in the BMW M3. The dimensions of the BMW M4 coupe are 4678mm in length, 1870mm in width, and 1394mm in height; the dimensions of the BMW M4 convertible are 4678mm in length, 1870mm in width, and 1398mm in height.

The BMW M4 has had distinct chassis codes since its first generation. The first generation, launched in 2014, was designated F82 (hardtop Coupe) and F83 (convertible). I personally saw the actual car at an auto show back then and remember its iconic kidney grille and widebody design. The second generation, codenamed G82 and G83, was introduced in late 2020. After switching to the CLAR platform, it was 60 kg lighter than the previous model, with a significant reduction in unsprung weight, making the improvement in handling agility particularly noticeable. These codes within BMW represent combinations of chassis structure and drivetrain configuration, and you can usually find them on the vehicle's identification plate or in the repair manual. If you're considering buying a used one, be sure to verify the chassis code, as many parts are not interchangeable between different generations.

As someone frequently exposed to German cars, BMW chassis codes are essentially development serial numbers. The first-generation M4 chassis, F82/F83, was produced from 2014 to 2020, while the current G82/G83 model has been in production since 2020. I've disassembled the rear subframe of an F82, which carries forward the classic design from the E92 M3. The transition to the CLAR platform in the G-series brought significant changes, including a redesigned front strut tower structure for quicker steering response – a critical point to note when modifying suspensions. Essentially, chassis codes act like a vehicle's ID card; providing them during maintenance allows technicians to quickly access the corresponding technical data.

Speaking of the BMW M4 chassis, the current models are the G82 (coupe) and G83 (convertible) launched in 2020, with their predecessors being the F82/F83. Once when helping a friend inspect a , I identified it as a pre-facelift model by its chassis code. Compared to the G-series, the F-series chassis has 15mm higher ground clearance and softer suspension bushings. BMW's naming convention is quite intuitive - F/G represents the development generation, while 82/83 indicates the two-door coupe body style. The differences might not be noticeable during daily driving, but the G-series shows significantly better anti-roll capability during aggressive cornering. It's recommended that owners keep their chassis codes noted in their phones, as this is particularly useful when purchasing spare parts.

Those who are into modifications know the importance of chassis codes. The current BMW M4 uses the G82/G83 platform. Last week, my friend just took apart his G82 to install coilover suspension. This generation's chassis features a double-joint front suspension, which significantly improves steering precision. The previous generation, F82/F83, even released a CS version later on, with more chassis reinforcement parts. In fact, you can identify the chassis type by looking at the 7th digit of the VIN—F stands for the F series, and G indicates the new platform. I've driven both generations of the M4 on the track, and the G series has a much higher cornering limit with less tire wear compared to the older model.


