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 Post subject: Increase in tire size and CPU?
PostPosted: Sat Mar 24, 2012 8:00 am 
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Joined: Thu Jun 30, 2011 9:53 pm
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2011 KK with the Select TracII system. For those of you who have gone to a larger diameter tire size, has this caused any problems with the traction control/ABS/Stability control? Or has the CPU simply learned to deal with the change?


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 Post subject: Re: Increase in tire size and CPU?
PostPosted: Sat Mar 24, 2012 3:20 pm 
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Location: Navarre FL
I shut mine off because it goes crazy around any turns


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 Post subject: Re: Increase in tire size and CPU?
PostPosted: Sun Mar 25, 2012 9:11 am 
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Location: Akron, Ohio
Here's another thread with some info
viewtopic.php?f=88&t=66000

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2010 KK Deep Water Blue,OME Liftplus 1",JBA 5.5 UCA ,Dynaflow cat back exhaust, Weathertech VV & mats,Mopar skids,Atthehelm front bumper, Smittybilt XRC 10, Rigid LED's,RL Skink Supersliders,Gecko Safari Basket Detroit Truetrac rear, E-Locker front, G2, Dana 4.10's


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 Post subject: Re: Increase in tire size and CPU?
PostPosted: Mon Apr 02, 2012 12:05 am 
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Location: Burbank, CA
My turns on for a second on those slow right or left turns when I leave my street. No big issue it is from my tire rubbing on some plastic

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LIFTED 2008 Liberty Sport 4x4 - Automatic - Select Trac - Skid Plates - Tow Package - Sirius Radio - Popular Group Package
4" JBA Lift v2.1 with 265/75r16, a Dual Band 144 / 440 Mobile Ham Radio with SBB-5 antenna. KD6TAV
PICTURES OF MY RIG
Lifted by JEEPIN BY AL - Get yours by following my link


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 Post subject: Re: Increase in tire size and CPU?
PostPosted: Mon Apr 02, 2012 1:42 am 
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E2 wrote:
My turns on for a second on those slow right or left turns when I leave my street. No big issue it is from my tire rubbing on some plastic


Did you do the pinch weld? How's that thing drive with those tires on it. Does it feel underpowered? I've been thinking of doing the same thing but I'm not ready to regear yet.

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2010 KK Deep Water Blue,OME Liftplus 1",JBA 5.5 UCA ,Dynaflow cat back exhaust, Weathertech VV & mats,Mopar skids,Atthehelm front bumper, Smittybilt XRC 10, Rigid LED's,RL Skink Supersliders,Gecko Safari Basket Detroit Truetrac rear, E-Locker front, G2, Dana 4.10's


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 Post subject: Re: Increase in tire size and CPU?
PostPosted: Thu Apr 05, 2012 8:42 am 
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Location: Burbank, CA
Ted15 wrote:
E2 wrote:
My turns on for a second on those slow right or left turns when I leave my street. No big issue it is from my tire rubbing on some plastic


Did you do the pinch weld? How's that thing drive with those tires on it. Does it feel underpowered? I've been thinking of doing the same thing but I'm not ready to regear yet.


The loss of power is very minor. I planned on getting regeared as what I heard, but I have not regeared. It has enough power on the city streets no issues, on the highway around 65 to floor it makes no different than giving it enough pick up enough speed as I need, it is not a hot rod. I tow sometimes 2000# & this is where I start to see some power loss up very steep hills. It can hold 55mph up the hill with ac on and be 115 outside. The issue with towing is finding the right rpms as trying to go 65mph up steep hills is in between 3500rmps and 5500rmp which you can get to When towing up a steep hill so you are stuck at 55mph unless you want to push 5500rpms which is not good to hold that long!

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LIFTED 2008 Liberty Sport 4x4 - Automatic - Select Trac - Skid Plates - Tow Package - Sirius Radio - Popular Group Package
4" JBA Lift v2.1 with 265/75r16, a Dual Band 144 / 440 Mobile Ham Radio with SBB-5 antenna. KD6TAV
PICTURES OF MY RIG
Lifted by JEEPIN BY AL - Get yours by following my link


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 Post subject: Re: Increase in tire size and CPU?
PostPosted: Thu Apr 05, 2012 7:22 pm 
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Joined: Sat Mar 31, 2012 6:07 pm
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Location: Dallas, TX
When I had my FJ Cruiser I lifted it about 2.5" and kept stock tires for a little while but toyotas have the same issue. I went to the dealer after reading some posts on their forums and the dealership does a recalibration of the speed sensors, I believe. Found one of my own posts and its called a ZERO POINT CALIBRATION. Idk if anyone has it in good with a tech but they might see if this is possible. I know just about anyone with a lifted FJC has the same issues with these newer trucks with computers galore, any amount of unalignment while the battery is unplugged can cause this.


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