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allen456 07-20-2011 10:40 AM

YJ info plate
Where is the factory info plate that is usually on the inside of doors on most cars. I am looking for the factory wheel/tire sizes on my 1993 with the 4.0 5spd Sahara edition. The PO did not recalibrate the speedo and I am trying to get a true idea of my mph and mpg.

buster01 07-20-2011 12:24 PM

If you know somebody with a GPS, it will tell you your speed. Take them (it) for a ride.

allen456 07-20-2011 01:16 PM

I have a gps, started running with it this morning. Just wanted an idea of the original tire/wheel specs too. I found a website that will calculate the %difference and mph, just wanted a more concrete figure. Wife is giving me hell for getting rid of my gas guzzler (Yukon Denali) and getting another gas drinker. However, I have had an average of 18.8 mpg so far on rough estimates.

PaulRevere1991 07-20-2011 02:56 PM

they were 225/75/15 tires on them, i run 235/75/15 and i like them better

allen456 07-20-2011 03:44 PM


Originally Posted by PaulRevere1991 (Post 1394539)
they were 225/75/15 tires on them, i run 235/75/15 and i like them better

Thanks, I am running 285/70/17s now, love them, but I am going to probably have to regear

allen456 07-20-2011 03:52 PM

here is the tire calculator that I was using and it matches pretty darn close to the speedo/gps numbers
Tire Dimensions Made Simple - Discount Tire

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