tires and speedo

[skinnee]

hey everyone, i just got a set of 31x9.50x15 super swamper tsl radials mounted on my 91 explorer. Do any of you know about how far off my speedometer is? i haven't had achance to really check it yet. I did take the time to test it in the mud though, the tires work amazing compared to the street tires that were on it before.
thanks

 

[Ray Lobato]

When I went from stock to 31X10.5's my speedometer was off by 3MPH, so at 65, I was really going 68. Now I'm runnig 33's and it off by 10MPH. It will get fixed next month when I get the gears changed.

 

[2001ExpSport]

go here to get your actual speed

4lo.com

Click on "True MPH"