Posted by FredM on Tuesday, August 29, 2006 at 12:46PM :
In Reply to: 9.00x20.0 Michelins and 5.83 gears posted by AAA on Tuesday, August 29, 2006 at 12:26PM :
http://www.ring-pinion.com/content/calculators/RPM.asp
the above link will let you play with all the numbers, and I went to http://www.michelintruck.com/michelintruck/productguide/newprod/TireSpecs.jsp?tread=XZE2 to get the tire size.
Guess they would be .4" smaller with some wear