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2005 BMW M3 COMPETITION PACKAGE · E46 · VERIFIED ON SEP 4, 2026

Will 235/40R18 tires fit a 2005 BMW M3 Competition Package?

235/40R18 is a listed alternate for the 2005 BMW M3 Competition Package: 645 mm rolling diameter (25.4 inches), -2.6 % versus the 225/40R19 factory tire, inside the 3 % limit. Sidewall 94 mm versus 90 mm. No tire in our capture is priced in this size for it.

IN SHORT

235/40R18 is a listed alternate for the 2005 BMW M3 Competition Package: 645 mm rolling diameter (25.4 inches), -2.6 % versus the 225/40R19 factory tire, inside the 3 % limit.

2005 BMW M3 Competition Package on its factory wheels 225/40R19 vs 235/40R18 drawn to scale

01The numbers

OE
225/40R19 · 663 mm
ASKED
235/40R18 · 645 mm
VS OE
-2.6 %

Rim width range on this car: 8–10.5 inches; offset ET20 to ET47. Whether 235/40R18 rubs at full lock depends on the wheel it sits on and the fender — not in our data; the diameter math above is what we can back.

02Tires priced in 235/40R18

Verified for this car

Fitment is computed from published vehicle data and the retailer's listed sizes (catalog 2026-09-04-tirerack-d, verified on Sep 4, 2026). Prices are list prices on that date. Verify with your installer before you buy. Buy links may be affiliate links.

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