Spedo question!
 

How much is my spedo going to be off with my stock gears and stuff with 31's? I can't tell if it's on or not. On my Ranger I had 33's and I got pulled over for going 73 when my spedo said 64 so now I'm somewhat worried about my XJ's spedo and I feel like I'm going faster than what it's actually saying! Maybe I'm just over reacting..

You'd think someone here would know. I use the county road markers. For instance, if I drove 50 miles and the odometer said I went 45, I'd know I was under reading 10%. (cause it would have been 10 in 100).

So 40 mph would be 44, 70 would really be 77...ect.

Yea I'm surprised no one has said anything because I've seen plenty of people with 31's and stock gears!

2 x pi x R is the circumference. If you wanted to give yourself a headache with a calculator you could punch it out! :sweatdrop: (pie= 3.14, R=1/2 Diameter)

just say no to the mankini.

Ta-dah!

http://jeep-xj.info/HowtoSpeedoGears.htm

:lol: