I have a 99 F150 S/C with the 4.6 auto and 308 gears. I just added 275 tires and my speedo is too slow. Will a chip fix this or will I need to play the speedo gear change. I have a digital odeometer if it matters.

Any Ideas.

Thanks


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Terry Deaton
99 F150 XLT 4.6 S/C
96 SVT COBRA
98 AERO
Speed Kills, drive a Chevy and live forever.

 

Terry,

You need to figure out the revolutions per mile of the new tires then take that info to your dealer and have them change the computer to that new number. I'm sure the dealer will charge you a minimal amount. Check with the tire shop or the manufacturer of the tires to get that number.