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      12-11-2012, 08:45 PM   #5
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VMRWheels's Avatar

Drives: BMW
Join Date: Jun 2007
Location: Anaheim, CA

iTrader: (4)

Garage List
2013 BMW M3  [5.00]
2015 BMW M4  [0.00]
2013 BMW F30  [0.00]
2014 BMW F22  [0.00]
2013 BMW F06  [0.00]
Not to add to the confusion but here is an example that may help you:

18x8.5 - 235/40/18 - Good size fit, no 'mushroom', no stretch
18x8.5 - 225/40/18 - Still a good fit, but it'll look slightly stretched since it's narrower by 10mm compared to the 235 width.

Also note that different brands have different shoulders which may look different even with the same size. IE: Yokohama S-drives will appear to be wider than say, a Hankook V12.

Check if you'd like to see different tire sizes on different rim widths.