What tyre size does a BMW Z4 use?

The most common size is 225/40R18. Depending on generation and engine, the BMW Z4 uses 12 different sizes including 225/50R17, 255/35R19, 255/40R18, 275/35R19, 275/40R18.

Where do I find my exact BMW Z4 tyre size?

Check the tyre placard in the driver's door jamb or fuel flap, or use the lookup tool on this page to select your generation and engine.

Tyres › BMW › Z4

BMW Z4 tyre sizes

All factory fitments by generation and engine — 16 sizes across 9 generations.

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Quick answer

The most common tyre size on the BMW Z4 is 225/40R18 (overall diameter ≈ 637 mm). Exact fitment depends on generation and engine — full breakdown below.

Z4 (G4Z (G29)/Facelift) 2022 - Roadster (2022–present)

Engine	Tyre sizes
Z4 M40i - 340 PS - Petrol - 2998 Hubraum	225/50R17 255/35R19 255/40R18 275/35R19 275/40R18
Z4 sDrive20i - 163 PS - Petrol - 1998 Hubraum	225/45R18 225/50R17 255/35R19 255/40R18 255/45R17 275/35R19 275/40R18
Z4 sDrive20i - 197 PS - 1998 cc	225/45R18 225/50R17 255/35R19 255/40R18 255/45R17 275/35R19 275/40R18
Z4 sDrive30i - 258 PS - Petrol - 1998 Hubraum	225/45R18 225/50R17 255/35R19 255/40R18 255/45R17 275/35R19 275/40R18

Z4 (G4Z (G29)) 2018 - 2022 - Roadster (2018–2022)

Engine	Tyre sizes
Z4 M40i - 340 PS - Petrol - 2998 Hubraum	225/50R17 255/35R19 255/40R18 275/35R19 275/40R18
Z4 sDrive20i - 163 PS - Petrol - 1998 Hubraum	225/45R18 225/50R17 255/35R19 255/40R18 255/45R17 275/35R19 275/40R18
Z4 sDrive20i - 197 PS - 1998 cc	225/45R18 225/50R17 255/35R19 255/40R18 255/45R17 275/35R19 275/40R18
Z4 sDrive30i - 258 PS - Petrol - 1998 Hubraum	225/45R18 225/50R17 255/35R19 255/40R18 255/45R17 275/35R19 275/40R18

Z4 (Z89/ZR/Facelift) 2013 - 2018 - Cabrio (2013–2018)

Engine	Tyre sizes
Z4 sDrive18i - 156 PS - Benzin - 1997 Hubraum	225/35R19 225/40R18 225/45R17 255/30R19 255/35R18 255/40R17
Z4 sDrive20i - 163 PS - Benzin - 1997 Hubraum	225/35R19 225/40R18 225/45R17 255/30R19 255/35R18 255/40R17
Z4 sDrive20i - 184 PS - Benzin - 1997 Hubraum	225/35R19 225/40R18 225/45R17 255/30R19 255/35R18 255/40R17
Z4 sDrive28i - 245 PS - Benzin - 1997 Hubraum	225/35R19 225/40R18 225/45R17 255/30R19 255/35R18 255/40R17
Z4 sDrive35i - 306 PS - Benzin - 2979 Hubraum	225/35R19 225/40R18 225/45R17 255/30R19 255/35R18 255/40R17
Z4 sDrive35is - 340 PS - Benzin - 2979 Hubraum	225/35R19 225/40R18 225/45R17 255/30R19 255/35R18

Z4 (Z89/ZR) 2009 - 2013 - Cabrio (2009–2013)

Engine	Tyre sizes
Z4 sDrive20i - 163 PS - Benzin - 1997 Hubraum	225/35R19 225/40R18 225/45R17 255/30R19 255/35R18 255/40R17
Z4 sDrive20i - 184 PS - Benzin - 1997 Hubraum	225/35R19 225/40R18 225/45R17 255/30R19 255/35R18 255/40R17
Z4 sDrive23i - 204 PS - Benzin - 2497 Hubraum	225/35R19 225/40R18 225/45R17 255/30R19 255/35R18 255/40R17
Z4 sDrive28i - 245 PS - Benzin - 1997 Hubraum	225/35R19 225/40R18 225/45R17 255/30R19 255/35R18 255/40R17
Z4 sDrive30i - 258 PS - Benzin - 2996 Hubraum	225/35R19 225/40R18 225/45R17 255/30R19 255/35R18 255/40R17
Z4 sDrive35i - 306 PS - Benzin - 2979 Hubraum	225/35R19 225/40R18 225/45R17 255/30R19 255/35R18 255/40R17
Z4 sDrive35is - 340 PS - Benzin - 2979 Hubraum	225/35R19 225/40R18 225/45R17 255/30R19 255/35R18

Z4 (Z85 (E85)/Facelift) 2006 - 2008 - Cabrio (2006–2008)

Engine	Tyre sizes
Z4 2.0i - 150 PS - Benzin - 1995 Hubraum	205/55R16 225/40R18 225/45R17 225/50R16 255/35R18 255/40R17
Z4 2.5i - 177 PS - Benzin - 2497 Hubraum	205/55R16 225/40R18 225/45R17 225/50R16 255/35R18 255/40R17
Z4 2.5i - 211 PS - Benzin - 2497 Hubraum	205/55R16 225/40R18 225/45R17 225/50R16 255/35R18 255/40R17
Z4 2.5i - 218 PS - Benzin - 2497 Hubraum	205/55R16 225/40R18 225/45R17 225/50R16 255/35R18 255/40R17
Z4 3.0i - 258 PS - Benzin - 2979 Hubraum	225/40R18 225/45R17 255/35R18 255/40R17
Z4 3.0i - 265 PS - Benzin - 2996 Hubraum	225/40R18 225/45R17 255/35R18 255/40R17

Z4 coupe (Z85 (E85)/Facelift) 2006 - 2008 - Coupé (2006–2008)

Engine	Tyre sizes
Z4 3.0i Coupé (E85) (Facelift) - 265 PS - Benzin - 2996 Hubraum	225/40R18 225/45R17 255/35R18 255/40R17

Z4 M-Roadster (M85) 2006 - 2008 - Cabrio (2006–2008)

Engine	Tyre sizes
Z4 M Roadster 3.2 - 343 PS - Benzin - 3246 Hubraum	225/40R18 225/45R18 255/40R18

Z4 M-coupe (M85) 2006 - 2008 - Coupé (2006–2008)

Engine	Tyre sizes
Z4 M-Coupé 3.2 - 343 PS - Benzin - 3246 Hubraum	225/40R18 225/45R18 255/40R18

Z4 (Z85 (E85)) 2002 - 2005 - Cabrio (2002–2005)

Engine	Tyre sizes
Z4 2.0i - 150 PS - Benzin - 1995 Hubraum	205/55R16 225/40R18 225/45R17 225/50R16 255/35R18 255/40R17
Z4 2.2i - 170 PS - Benzin - 2171 Hubraum	205/55R16 225/40R18 225/45R17 225/50R16 245/40R17 255/35R18 255/40R17
Z4 2.5i - 192 PS - Benzin - 2494 Hubraum	205/55R16 225/40R18 225/45R17 225/50R16 245/40R17 255/35R18 255/40R17
Z4 3.0i - 231 PS - Benzin - 2979 Hubraum	225/40R18 225/45R17 225/50R16 245/40R17 255/35R18

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