65 x 5:29 x .85 / 37 x 336 = 2,654 rpm's at 65mph
65 x 4:11 x .85 / 28 x 336 = 2,724 rpm's at 65mph
.............................70rpm's
I'd say difference in rpm is negligible,
must be the 100lbs more per tire? 
Got me......
NO!!
....I thought that was funny
it was in his last post! 

65 x 4:11 x .85 / 28 x 336 = 2,724 rpm's at 65mph
.............................70rpm's
I'd say difference in rpm is negligible, Got me......
alright since all of you hate what i am gonna do to my truck why don't you tell me what i should do? and why i should do it that way.
NO!!
....I thought that was funny
it was in his last post! 

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