after getting tires
#3
JK Enthusiast
Join Date: May 2011
Location: Aurora, IL
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I bought the AEV procal when I changed tires. Its super easy to use. You just need some small fingers or a small screwdriver to flip the dip switches. I wasn't so worried about the speedo, more concerned with incorrect odometer.
#4
JK Junkie
#5
How tall were you OEM tires? Your new tires are 33's so if the OEM tires were a lot shorter it would be a good idea to have the speedometer recalibrated because it and your odometer will be off. My OEM tires were 32's and when I installed 33's my speedo is off 2 mph at 65 mph, so mine isn't too bad.
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#9
I agree. Going from 32's to 33's isn't that big a deal. I'm not sure what Jeep dealers charge or if they can calibrate it for 33's. Ford dealers usually charge around $80 and they are limited to programming the computer for OEM sizes.
#10
JK Freak
Join Date: Dec 2010
Location: Philadelphia, PA
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yea i saw the same thing with my 35's until i superchiped it, but for autos it also recalibrates your shift points which is prolly more importand than speedo