Quote:
Originally Posted by Lew Carrum
225 tyre on a 9" rim? No thanks.
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8.0" or 8.5" would give a better fit on most cars (especially on the 2-series due to strut clearance), but from the perspective of maximising lateral grip and what Michelin certifies the tyre to fit, 9.0" is a supported width for 225/40 tyres. The lower the profile, the bigger the rim protector ridge, the more the tyre will look stretched on the proper wheel width. Looks, performance and correct sizing don't necessarily correlate.
As the profile goes up, the stretch look is less, here are a couple of photos that show 45 and 50 profile tyres on wheels at or near the maximum width. The first photo shows a 215/45-13 which is certified tor 7.0", 7.5" and 8.0" widths, on the maximum 8.0" wide wheel. The second photo shows a 195/50-15 which is certified for 5.5", 6.0", 6.5" and 7.0" widths, on a 6.5" wheel.