Alpina B4 tire and wheel sizes
The Alpina B4 was approved in Switzerland between 2014 and 2019 with tires from 225/45R18 to 265/30R20 on 18″, 19″, 20″ wheels. The most common sizes are 225/45R18, 245/35R19, 245/30R20. 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
Alpina B4 (2014–2019) type ALPINA F30
15 approved versions, e.g. B4 Biturbo Coupé, B4 BiturboCou4x4, B4 Biturbo Cabrio, B4 S Bi. Cabrio.
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 15 of 19 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; 11 % 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.