That site is dead on. I just put a set of 285/75/16 Revo's on my truck. Stock were 245's and I have one of those city cops Radar on a trailer on a street by my house and I ran at several speeds and have verify and the charts are dead on with my findings. 5MPH diff. New Chevy Parts www.gmpartsclub.com
Good thing no cops were around when I was doing 85 in a 45:lol:
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