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Set of 4: Each product is sold as a complete set of four pieces, one piece for each wheel.
M cars don't leave much to chance. The M2, M3, M4, and M5 communities are particular about what goes on the car — HRE, Vossen, 3SDM, and Forgeline are common wheel choices, and most of those brands' center bores are wider than what any OEM-sourced cap was designed to fill.
The floating center cap keeps the M badge upright as the wheel turns. Counter-rotating mechanism, so the emblem stays level at highway speed the same as it does sitting still. Set of 4.
M series builds typically run 19" or 20" wheels. Center bore sizes vary by wheel brand — measure your bore before ordering. Matte black and chrome are the most common finish choices on M builds, though all options are available.
Note on Brushed & Polished Aluminum: Machined metal — not painted plastic. $50 upcharge reflected in the price.
| Italian | Spanish | German | UK | US | Japanese | Chinese | Russian | Korean |
|---|---|---|---|---|---|---|---|---|
| 34 | 30 | 28 | 4 | 00 | 3 | 155/75A | 36 | 44 |
| 36 | 32 | 30 | 6 | 0 | 5 | 155/80A | 38 | 44 |
| 38 | 34 | 32 | 8 | 2 | 7 | 160/84A | 40 | 55 |
| 40 | 36 | 34 | 10 | 4 | 9 | 165/88A | 42 | 55 |
| 42 | 38 | 36 | 12 | 6 | 11 | 170/92A | 44 | 66 |
| 44 | 40 | 38 | 14 | 8 | 13 | 175/96A | 46 | 66 |
| 46 | 42 | 40 | 16 | 10 | 15 | 170/98A | 48 | 77 |
| 48 | 44 | 42 | 18 | 12 | 17 | 170/100B | 50 | 77 |
| 50 | 46 | 44 | 20 | 14 | 19 | 175/100B | 52 | 88 |
| 52 | 48 | 46 | 22 | 16 | 21 | 180/104B | 54 | 88 |
You need one of your current caps, a ruler or tape measure, a sheet of paper and a pencil.
Tap your size to select it.
Pick the size closest to your number. A few millimeters either way is normal. 177.8mm (7") isn't available in Brushed or Polished Aluminum.
Start at the last whole number, then count the little lines past it. Each one adds 1/16 in. Example: 5 and 11 little lines is 5 11/16 in, our 145mm size.

Flip the cap over. Measure the raised inner ring that holds the metal clip, outside edge to outside edge, straight across the middle.
Don't measure the hole inside the ring or the wide outer cap.
Tap your back ring size to select it.
Got your numbers? Pick your logo and finish, then choose your back ring and outer size.
