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Old 11-07-2019, 10:55 AM
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Default front to back rule of thumb?

I've been measuring my Torino for the Boze wheels and a theoretical tire size.

What should the diameter difference be from front to back?

Back wheels will be 18x10

Front wheels will be 18x8

I can get a 305/40 to 45 on the back, that is a 27.6 to 28.8 diameter

Trying for a 255/40 or 45 on the front, that is a 26.0 to 27.0 diameter.

May have to go to a 245 on the front due to width clearance.

Will it look strange with a 26 in the front and a 28.8 in the back?

Thanks, Joe
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Old 11-07-2019, 04:06 PM
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I prefer matching sidewall over matching OD. but that is just my preference.
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Old 11-08-2019, 09:08 AM
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Default 40 - 40

I've got 255/45/18s up front 27.0" overall and 295/40/18 rear 27.3" overall.

When I replace tires again I'm going 40-40 as sometimes the 45 up front looks bigger from certain angles even though it's .3" shorter overall.

I'd get some bald tires and play with sizing before you buy... .02 cents.
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Old 11-13-2019, 12:29 PM
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Thank you for all the replies, it makes more sense now.
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