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Tire Size

Tire Size

Postby Medium [OP] » Sep 15 2011, 1:07am

I have a 2009 Silverado 1500 2WD with the factory 20's... its time for some new tires.. what the largest size tire i can fit on this truck? Im lookin to get something a little bit meater this time around instead of the sporty stock tires. Is there a calculator or something somewhere to answer this question?
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Re: Tire Size

Postby Trumpster1 » Sep 15 2011, 1:20am

Well, we don't have a calculator, but we have an awesome search function that allows you to find other threads relating to the same question you are asking with hundreds of answers!

Good luck on your new tires.
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Re: Tire Size

Postby LBZDMAX » Sep 15 2011, 2:24am

Without a leveling kit 285s would prob rub a hair I believe.
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Re: Tire Size

Postby Medium [OP] » Sep 15 2011, 2:32am

thanks... thats what i was thinking too.. i was thinking 275/55/20 or 275/60/20
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Re: Tire Size

Postby captquin » Sep 15 2011, 3:37am

I'm in the same situation and going with the 275/60's. They're 1" taller than the 275/55's and I called a few tire places to confirm they would fit.

You may already know but you calculate the size of the tire like this. 2(Width in inches x aspect ration) + rim size. So 275/55 R20 would be:
275mm = 10.83 inches (http://www.convertunits.com/from/mm/to/inches)
2(10.83x.55) + 20
2(5.96) + 20
11.91 + 20
31.91"

Similarly The 275/65 's would be 33"

Hope that helps.
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