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2014 Chevy Silverado
Platform: Truck, GMT 400, 800, & 900

Tire sizing help!!

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Old Dec 16, 2011 | 12:03 AM
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Matt1500
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Default Tire sizing help!!
The tires on my truck say 285/70R15 on them. What do the numbers mean? What is the biggest tire I can get?
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Old Dec 16, 2011 | 12:12 PM
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azabrnski
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you got approximately a 30" tire on now... I had 31.5" stock on my '06 1500LT. I put on a leveling kit and was able to go up to 33". 285 is the width of your tire in millimeters. 70 is the sidewall height (70% of the 285mm). 15 is the size wheel size.
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