BMW M4 tire and wheel sizes
The BMW M4 was approved in Switzerland between 2014 and 2023 with tires from 255/40R18 to 295/25R21 on 18″, 19″, 20″, 21″ wheels. The most common sizes are 285/30R20, 275/35R19, 255/35R19. Some versions use different sizes front and rear (staggered fitment).
Sizes differ by engine, trim and market. Confirm with the tire placard (usually on the driver's door jamb), the owner's manual or the vehicle registration papers before buying tires or wheels.
Most common sizes
BMW M4 (2020–2023) type G234M
38 approved versions, e.g. M4, M4 Competition, M4 Comp. M xDrive.
| Tire size | Axle | Load / speed | Rim and offset | Versions |
|---|---|---|---|---|
| 275/40R18 | Front | 103Y | 9.5Jx18 ET20 | 2 |
| 275/35R19 | Front | 100Y | 9Jx19 ET20, 9.5Jx19 ET20 | 38 |
| 275/35R19 | Rear | 100V | 9.5Jx19 ET20 | 38 |
| 285/35R19 | Rear | 103Y | 10.5Jx19 ET20 | 2 |
| 285/30R20 | Front | 99Y | 9.5Jx20 ET20, 10Jx20 ET14 | 38 |
| 285/30R20 | Rear | 99Y | 10.5Jx20 ET20 | 38 |
| 295/25R21 | Rear | 96Y | 10.5Jx21 ET20, 11Jx21 ET0 | 38 |
BMW M4 (2014–2020) type M3
38 approved versions, e.g. M4 Coupé, M4 Cabrio, M4.
| Tire size | Axle | Load / speed | Rim and offset | Versions |
|---|---|---|---|---|
| 255/40R18 | Front | 95Y | 8.5Jx18 ET27, 9Jx18 ET29 | 25 |
| 255/40R18 | Rear | 99V | 9Jx18 ET29 | 9 |
| 275/40R18 | Rear | 99Y | 10Jx18 ET40 | 16 |
| 255/35R19 | Front | 96V | 8.5Jx19 ET27, 9Jx19 ET29 | 38 |
| 265/35R19 | Front | 98Y | 9Jx19 ET29 | 4 |
| 255/35R19 | Rear | 96V | 9Jx19 ET29 | 38 |
| 275/35R19 | Rear | 100Y | 10Jx19 ET40 | 36 |
| 265/30R20 | Front | 94Y | 9Jx20 ET29 | 37 |
| 285/30R20 | Rear | 99Y | 10Jx20 ET40 | 37 |
How to read this table
Rim and offset uses the European notation: 7Jx17 ET45 is a 7-inch wide, 17-inch diameter wheel with a 45 mm offset. "Versions" is how many approved versions list that size — a rough guide to how common it is. Load / speed is the most frequent service description (for example 91V) among them; your car may require a higher one.
Showing 76 of 81 approvals: rare special versions are left out to keep the page readable. Records were read from the German-language text and checked against the French text; 100 % matched exactly.
Source: Swiss Federal Roads Office (FEDRO/ASTRA), open government data. Original data (downloaded 2026-09-29). Data processed by us; errors in processing are ours, not the publisher's.