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Calibrate for 35s

Tintop

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Did we ever get an answer on the automatic calibration for 35s? I installed mine today and the speedo seems to be off 2mph
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Bearded_Dragon

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You need to have it programmed.
 

Ryan_Barnes

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Its a dealer calibration for now, until the aftermarket catches up.
 

DanW

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Its a dealer calibration for now, until the aftermarket catches up.
Well, I guess if they install it, I'll make sure that's part of the deal.
 

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Dynomite1371

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Just saw this on the tube, FYI.
 

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My dealer said they can only calibrate to largest factory size, which is 33's.

So if I upgrade to 35's I have to find somewhere else to calibrate. But I could put the 33s on my 17 and have dealer calibrate that one.

Has anyone found a shop that can calibrate the jlu to 35's?
 

AZCrawl

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My dealer said they can only calibrate to largest factory size, which is 33's.

So if I upgrade to 35's I have to find somewhere else to calibrate. But I could put the 33s on my 17 and have dealer calibrate that one.

Has anyone found a shop that can calibrate the jlu to 35's?
Your dealer needs to find out how to do it since they are supposed to know how. They are being lazy.
 

DanW

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My dealer said they couldn't do it, so I should wait for an aftermarket programmer tool. I found another dealer that does lots of lifts, and they said they could do it. They quoted 120 bucks and about 5 minutes to do it.
 

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RonH

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My dealer said they couldn't do it, so I should wait for an aftermarket programmer tool. I found another dealer that does lots of lifts, and they said they could do it. They quoted 120 bucks and about 5 minutes to do it.
For a $120 I'd deal with the 6% diff. Like I said in another post, the upside is your odo shows 6% fewer miles as well...
 

RonH

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Once Superchips comes out with a tune for the JL, you can fix it then...
 

DanW

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For a $120 I'd deal with the 6% diff. Like I said in another post, the upside is your odo shows 6% fewer miles as well...
Yeah, it makes me want to wait for a Pro-Cal and spend a little more, but I'm OCD about this kind of stuff. I want it right. I may see about having them install my lift and then see if they'd just throw in the flash.
 

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Your dealer needs to find out how to do it since they are supposed to know how. They are being lazy.
I believe the message says when you try to program 35" tires "unsupported tire size". There isn't a way for them to do it . Just like you couldn't program anything larger than a 255/75R17 / 255/70R18 (32.06) on a JK.
 
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DanW

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I believe the message says when you try to program 35" tires "unsupported tire size". There isn't a way for them to do it . Just like you couldn't program anything larger than a 255/75R17 / 255/70R18 (32.06) on a JK.
A dealer near me that does lots of lifts said they can do it. They don't do it by tire size, but by height with the Jeep's weight on it.
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