My 2010 Unlimited Rubicon had a slight drift to the right from the day I picked it up. It was just enough to have to hold a slight pressure on the wheel. It was on a flat uncrowned road. When I added the 34" MTRs, the drift almost became a pull. I swapped the front tires to see if it was a radial pull. Same result. I had set the castor at 5 degrees and 1/8" tow in. It handles great except for the drift to the right. I installed the OME 3" lift with new tracking bars and sent it to the dealer to regear to 513s and alignment. I lost a little over 1 mpg with the gears, but the drift/pull is still there, maybe a little worse.

Any suggestions? I have adjustable lowers in the front. I read somewhere that the right can be set slightly more to take care of a crowned road, but 90% of my driving is on interstate or pretty flat roads. None of my other vehicles do this on the same roads.

Thanks

 

Adjust your passenger side longer by 1 or 2 turns.Most jk's have a slight pull to the right. It's exagerated aswell when adding larger, wider tires.

 

Double check your track bars are adjusted correctly (centered). That is something that could likely not be included in an alignment, unless you mention it...

 

I mentioned the track bars to him and he said the rear was right on ,but the front had to be adjusted slightly. I'll try a couple of turns on the right LCA. Thanks

 

Curious about this, as most people gain mpg's with gears. Do you have a programmer to recalibrate for the tire height & the new gears? If not, I'd guess that you are just getting a false reading.

 

I've got the superchip and have corrected the tires so the speedo matches my Garmin gps. My speedo was reading about 5% faster than the gps at 60 mph with everything stock. That speed is used to calculate mpg which gave me close to 20 mpg. When I lowered the tire size to match the gps, it lowered my mpg to 19. When I added the 34" tires and lift and corrected for size, I was getting about 17.5. After the 513s were put in, I'm at 16 mpg driving 60 with no city driving. I'm using the 87 octane setting. There is no logical reason for the mpg to go up with a high gear ratio. The engine is working less, but is running at a higher rpm. I've seen the same thing in my diesel pusher motorhome. It gets 8 mpg pulling a 7000# load in 6th gear at 1550 rpm. If I run in 5th it turns 1850 and gets 7 mpg. Same thing with the Jeep. No surprize to me.

 

Check your balljoints. The factory ones are soooo bad that I had a nasty pull due to mine. Put in the prosteers and it is minimal now.

 

?? I've never seen/driven a JK with a pull. Where exactly do you get "most Jk's have a slight pull?

 

I'm not lookin it up, do a search. I've read dozens of threads with people having a slight pull to the right after lifting and or running larger tires. Have also seen this in person in some stock jk's aswell as lifted. As a matter of fact, after talking with a couple alignment guys, they interjected that most vehicles are designed that way and some vehicles show it more than others. In addition the types of tires, size, width and such can also amplify the pull or drift to the right. This is one reason that some lift manufacturers say to lengthen your passenger side control arm abit more than the driver side. That being said, when I was running 35x12.50's I didn't seem to have a pull/drift at all. When I changed to 37x13.50's it was very noticeable. Just trying to help the OP with his situation. Which is kinda what we all want to do on here ,right? I'm curious to read your insight to his prob rather than a childish "Uh, duh, where'd ya here dat from, uh,der" type comments that you usually make when you know absolutely nothing about what you are asking about and/or just try to belittle someone in your pastoresque way.

 

I do recall the TF front LCA install instructions suggested adjusting one control arm slightly longer because of the common complaint of pulling to the right. That may have been for four doors only--not certain. But, I do know that the TF instructions explicitly called out the issue.