I previosly had Lightning rims on my 99 f150. Due to an incident i have changed back to the stock rim size. When I had the lightning rims my computer was recalibrated for the speedo correction, and now those a-holes won't change it back. Any other ideas? I've tried 4 dealerships....

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*K&N, 75 HP Nitrous, Gibson Super Truck Exhaust, White Face Guages, Superchip.
1987 Mustang Hatch LX
*351W, 250 HP Nitrous, 12pt. Cage, Enough other stuff to go 10's.
1987 Mustang Hatch LX......TLETKA Project Car.....
*2.3L N/a, Will have nitrous, 5spd., 4.10 gears, oh yeah it's a carbed-son-bich. ALMOST DONE

 

That is lame.What is their reasoning?What was the outside tire diameter on the lightning rims?Stock rims?(30 inches= stock 16s w/255/70/16)
If the outside diamter didn't change by more than an inch or two your speedo isn't off by more than a coouple of miles per hoour.I went from the 255/70/16 to a 265/75/16 on my truck and the speedo is only off by a couple of mph.I think I read somewhere that ford requires the speedo to be off by more 5mph or more to recalibrate.Hope this helps

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2000 f150 4x4 sport,black, 3.55 5spd ,4.2 liters of fury ------mods----pioneer cd,alpine sub,cadence ultradrive amps,alpine mids&tweets,Delta tool box,class III reciever hitch,herculiner bed liner,taz floor mats,profile bug guard,custom painted tail light covers,headlight covers,cranked torsion bars,pirelli scorpion at(265/75 16), modified air box(crash1 style),JET air filter,blue cargo lights


www.lightningcrashz@hotmail.com