Thread: Tall 15" tires?
View Single Post
  #4  
Old March 8th, 2022, 12:03 AM
James James is offline
-= Extreme Supporter =-
 
Join Date: Jun 2013
Location: Greer, SC
Truck: 1964 GMC 1500 2wd
Age: 69
Posts: 432
Rep Power: 199
James will become famous soon enoughJames will become famous soon enoughJames will become famous soon enough
Default Re: Tall 15" tires?

According to my numbers with a 30.5" tire you will have:
2150 rpm = 55 mph
2350 rpm = 60 mph
2550 rpm = 65 mph
2750 rpm = 70 mph

With a 29" tire:
2250 rpm = 55 mph
2450 rpm = 60 mph
2650 rpm = 65 mph
2850 rpm = 70 mph

On my truck with 16" rims and a 31.7" tire:
2050 rpm = 55 mph
2250 rpm = 60 mph
2450 rpm = 65 mph
2650 rpm = 70 mph

All of these numbers should be within ±2 mph.
There is not a lot of different between the tire sizes. So whatever you decide to use, it is not going to make a big difference.
Reply With Quote