AEV ProCal set up w/Nitto Trail Graplers 37x12.50

Crystaliner said:

I would like to know what everyone is setting their tire size to with this tire.

My speedo is reading 4MPH faster @ 65mph. Vs. GPS Phone & Garmin gps

I though Eddie posted the # but for the life of me I can't seem to find the post

Thanks.......

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cozdude said:

Get your tires to the psi you want to run then measure from the ground to the center of the wheel and multiply x2. You should get a number somewhere around 35"

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Crystaliner said:

figured that...just kinda hoped there was a magic#

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KYRubi said:

If your speedo is reading 65 and the GPS is reading 61 you just need to do a little math to get the magic number.

61/65=0.93846

Take the tire size you entered such as 37 and multiply it by the result

37*0.93846=34.723

Presto, you have your magic number.:thumb:

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Crystaliner said:

Ok...finally found the correct combination air@29lbs/tire size. Nitto trail grapplers 37x12.5

I set my AEV Procal tire size 35 1/2 and BINGO phone GPS/Garmin and speedo are insync now

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