rpm question

Giovanni · **Posted:** Sat Jan 07, 2012 5:53 pm

I have 235/85/16 now with th400 and 410 gears
What rpm with I be at around 65 with 225/75/16
I dont have a tac in there now to even tell were im at

online rpm calculator
says
31.7 is 2900 rpm @65MPH
29.3 is 3138 rpm @65MPH
Tire Size Comparison
Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
225/75-16 6.6in 14.6in 29.3in 92.0in 689 0.0%
235/85-16 7.9in 15.9in 31.7in 99.7in 636 8.3%

DOES THIS SOUND ABOUT RIGHT?

Scoti · **Joined:** Wed Jul 27, 2011 11:44 pm **Posts:** 21

Yep, sounds about right.

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