Approved Tires ALPINA B4 GT

2 variants · 1 configuration

Officially FEDRO-approved tire sizes for all ALPINA B4 GT variants.

529.0 CVessence

2 variants

255/35 ZR20

529.0 CV · 2 993 cc · essence · 1AF923529.0 CV · 2 993 cc · essence · 1AF911

Standard configuration

Front (AV)

255/35 ZR20

Width255 mm

Aspect ratio35%

Wheel8.5 x 20" ET 32

Offset (ET)32 mm

255/35 R20 M+S

Option 1

Rear (AR)

285/30 ZR20

Width285 mm

Aspect ratio30%

Wheel10 x 20" ET 48

Offset (ET)48 mm

285/30 R20 M+S

Approved tires: official Swiss data

Every vehicle registered in Switzerland has a list of tire sizes approved by the Federal Roads Office (FEDRO). This data comes from type approvals (TARGA) and determines which tire sizes you can legally mount. Our tool displays standard and optional configurations with wheels, offset, load and speed ratings.

Why respect the approval?

Mounting non-approved tires can lead to inspection failure, fines, or even insurance cancellation in case of an accident. Always check that your tires match the approved sizes for your vehicle.