Help with revs per mile

Joined
Jul 24, 2008
Messages
242
Location
Billings MT
Joined
Dec 21, 2003
Messages
12,385
Location
Northern CA
 Originally Posted By: Riptide
I wonder why the Nitto site is so far off? They make the tire. :/
The basic elementary school level calculation that results in 708.8 revs/mile assumes that the tires is made exactly to the dimensions indicated by the tire size and that the tire is infinitely rigid, neither of which are true. Could it be that Nitto knows more about their tires than some simple spreadsheet or a generic revs/mile calculator that ignores flex and manufacturing tolerances?
 

Riptide

Thread starter
Joined
Jul 24, 2008
Messages
242
Location
Billings MT
Yah I think I'll just use the 730 figure until I get access to a GPS that will let me fine tune it.
 
Joined
Feb 22, 2003
Messages
4,004
Location
Somewhere in the US
Allow me to confirm that the rolling diameter of a tire can not be measured directly. However, the rolling diameter is about 97% of the overall diameter. Most tire size calculators do not take this into account.
 
Last edited:
Joined
Feb 2, 2009
Messages
1,928
Location
Ohio,USA
 Originally Posted By: XS650
 Originally Posted By: Riptide
I wonder why the Nitto site is so far off? They make the tire. :/
The basic elementary school level calculation that results in 708.8 revs/mile assumes that the tires is made exactly to the dimensions indicated by the tire size and that the tire is infinitely rigid, neither of which are true. Could it be that Nitto knows more about their tires than some simple spreadsheet or a generic revs/mile calculator that ignores flex and manufacturing tolerances?
That's all dirty corporate propaganda, and you know it!
 
Top