recalibration

NOVARENE · **Posted:** Sat Dec 06, 2008 12:48 pm

Hey guys,

How much should it cost to get a recalibration for bigger tires, and where should I get it done? Dealer or local shop? I think the computer is confused and I am losing mpgs. thanks a lot.

ATXKJ · **Posted:** Sat Dec 06, 2008 2:44 pm

Pretty sure it has to be the dealer -
however I've had 2 dealers tell me it can't be done (except for stock tires sizes)
but other people have gotten theirs recalibrated and said it makes a lot of difference .

meh_kick · **Posted:** Sat Dec 06, 2008 3:24 pm

It will depend on your dealership. Mine charged for half-an-hour of labor, 35 bucks.

They can change it to a specified tire size (about 8 to choose from - one or two sizes seen on the KJ). Or they can set it to a specified rotations per mile - which can be calculated or found on your tire manufacturer's website.

raceinfan · **Posted:** Sat Dec 06, 2008 4:58 pm

PCTim had it done at the dealer for $60

your losing MPG :lol:

IT MIGHT HAVE SOMETHING TO DO WITH LARGER TIRES :wink:

Joe Jeeper · **Posted:** Sat Dec 06, 2008 8:34 pm

I've got 32'' tires never recalibrated, when I go past those speed indicating signs the police put up my speedometer is dead on? Can't figure that one out.

RAYMAN975 · **Posted:** Sun Dec 07, 2008 9:54 pm

i got mine done for about 45 bucks at the jeep dealer

tjkj2002 · **Posted:** Sun Dec 07, 2008 11:52 pm

Some years of the KJ's can only be reprogrammed to certian tire sizes,other years you can input Rev's per mile.It was real fun reprogramming mine with the gear swap and 32" tires,it's very close and cost me $45(1/2 hour of labor).

2006 KJ · **Posted:** Mon Dec 08, 2008 12:02 am

i didnt reprogram mine at all.. and it is perfectly on with my GPS... it was a little off before i put on 32's ... so it actually made it better

Jeepjeepster · **Posted:** Mon Dec 08, 2008 12:32 am

Mines off around 2mph at 70mph. I only have 245/70/16 tires. It was pretty close with the stock tires.

NOVARENE · **Posted:** Mon Dec 08, 2008 3:16 pm

They thing I really care about is for performance purposes so that the computer knows when to switch gears.

RAYMAN975 · **Posted:** Mon Dec 08, 2008 10:12 pm

yea exactly. when i put my 32" tires on, my transmission would shift between 3 and 4 constantly on the highway, i either had to go like 55 or so, or do like 75mph to keep it from shifting around, now it doesnt do it as much and i can stay at 60-65 steadily

NOVARENE · **Posted:** Tue Dec 09, 2008 12:41 pm

@$#%, Sorry I just watched Deer Hunter yesterday

recalibration

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