How to correct for 285's?
#1
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How to correct for 285's?
Ok guys, im curious. I am running 285's on my truck, which came stock with 245's. Now i know you can measure the circumfrence, and do all this other stuff, but does anyone know what you multiply your miles by to make up for the tire size difference. I thought i heard you multiply the miles you have gone by .20 for 285's, but im not sure. Im sure someone on here knows. Thanks
Eric
Eric
#5
Originally Posted by blackdiesel
hes got a 12v
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Originally Posted by oestreich84
285's are 8% larger than 245's. Multiply your mileage by 1.08, and you will have the correct numbers.
Eric
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Originally Posted by cumminsdriver635
And i have a 12 valve, so i dont need a smarty. We have throttle response stock J/K
Eric
Eric
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i have 285 tires and when i was driving down the interstate, one mile marker was .9 on my odometer, so i just added the first numbers on to the total to get an idea of my milage (250 miles on odometer- add 25)
#14
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Most speedometer correction companies suggest you drive a five mile marked stretch of highway several times, resetting your odometer each time. Then you can figure the exact percentage difference and correct accordingly. Google speedometer correction and you will find a ton of companies. I just talked to these guys last week about my jeep. I will be getting one of the Stewart Warner adapeters as soon as I figure out where some of my slippage is occuring in the transfer case in the Jeep.
http://texasindustrialelectric.com/speedo.asp
http://texasindustrialelectric.com/speedo.asp
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