2000 Sahara, 4.0 with 7" SL, 1" BL on 35" Pro Comp Xtreme MT2s.
It's been awhile fellas since I've had to check on my toe-in. I believe the Jeep 4x4 shop that installed my HD steering setup didn't adjust the toe-in properly.
I seem to have greater wear on the outside edges of both fronts compared with the inner edges. I'm running the 35s at 24psi.
As far as I could tell with the tires ON the ground, the front side measurement was ~1/2" GREATER than the back side measurement.
So: I have toe-out do I not? And then if so, I need to adjust the track bar and make it shorter is what I was thinking so I have about 1/16"-1/8" toe-IN, correct?
Strange though, the inside are "fresher" than the outsides. Maybe my measurements weren't great. I took a point on the inside of the inner edge with tape to the outside of the tread for the front; did the same at a point slightly lower than that because of the DS interference and got ~1/2" longer in rear...
You don't use the track bar to adjust toe-in. You use the tie rod to adjust toe-in, then the drag link to recenter the wheel. Here's a PDF write up of a couple of different ways:
I've tried measuring from out side to outside like that before, and got measurements all over the place. Just mark the tires on each side in one spot white pen or I have used masking tape. I roll the jeep 180 degrees and take measurements and go from there. I do use my son for this to hold the tape measure..
I always try to get a measurement on the wheel itself. Usually run the tape under the control arms for the rear measurement and then on the leading edge of the wheel in close to the same spot vertically as I was able to measure the rear edge. I think it is more accurate than trying to measure the lugs on the tire.
If you measure to the wheel, you're basically doubling (33" tire on a 15" rim) your toe-in measurement by not measuring to the outer edge of the tire. An 1/8" toe-in at the wheel will produce over 1/4" at the tire edge.
As mentioned above, just use a piece of tape and a sharpie.
That works, he's how I do mine. It just takes two 1" square pieces of aluminum and a pair of spring clamps. The measurements are made at points marked to equal your tire diameter. This method is simple, fast, and it gives more repeatable results.
Additionally, you guys think it's the toe-in that's driving the outer edges to wear faster? Other than tire pressure, which I stated originally is at 24psi, I can't think of another setting that would cause this.
Could be toe in, or could be cornering. My wife's jeep was toed in, and just worn the Pass side tire flat across the tread.
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