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Wheel and tire size calculation and fender gap

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Wheel and tire size calculation and fender gap

 
Old 03-12-2019, 07:32 AM
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Default Wheel and tire size calculation and fender gap

Hi all,
My stock 2016 A8L currently has 255/45R20 all around. If I change to a 21" wheel with tire size of 275/35R21, will the gap between the tire and fender going to be wider or narrower??


Thanks,
Anthony
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Old 03-12-2019, 08:27 AM
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It's not really stock as it stands...

Stock should be 265/40-20. If the size you mention is really on the car, the tire diameter will drop slightly for the 21's--about " diameter reduction, or 1/4" more gap.
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Old 03-12-2019, 09:01 AM
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Thanks MP4.2+6.0
I was really hoping you would see this post and response.

Have a great day.
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Old 03-12-2019, 09:52 AM
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antmay based upon the what should be stock for a 20" wheel, you'd be near perfect.



However, based upon what you stated: 255/45/20, if you want to stay about the same for a 21" wheel, you'd want 255/40/21

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Old 03-12-2019, 10:44 AM
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raj99,
wow, thats super informative.

Thanks so much.
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