Lowered E55, wearing tires and pulling after alignment




Had the alignment checked twice, all suspension parts are in good condition yet the car steers to the right and wears the insides of the tires pretty intensely. Just to point out, it doesn't pull right, it actually steers right. If i hold the wheel straight, it drives straight, but when i let go, wheel turns right by itself.
On the rack, i leave the car running so the airmatik doesn't settle, im in Sport 1 and i set the toe on the low end of the setting (nearest to 0) to accommodate for the extra negative camber due to lowering. Camber is at -2* on both sides. Car is lowered via STAR and i drive in Sport 1 99% of the time.
See attached photos of the inside of the tires. This is after 3,000 miles.
What am i doing wrong???
2) What is your caster like? A caster drag can cause the car to pull to the right and some manufacturers set them up like that to help avoid head-on collisions. However, this would not cause wear.
3) Another thing to consider is that roads are crowned for drainage, so keep that in mind when checking your wandering.
What is you Cross Caster or your Cross SAI? Post your alignment sheet, if possible.
I'd start by getting your camber within spec.




Had the alignment checked twice, all suspension parts are in good condition yet the car steers to the right and wears the insides of the tires pretty intensely. Just to point out, it doesn't pull right, it actually steers right. If i hold the wheel straight, it drives straight, but when i let go, wheel turns right by itself.
On the rack, i leave the car running so the airmatik doesn't settle, im in Sport 1 and i set the toe on the low end of the setting (nearest to 0) to accommodate for the extra negative camber due to lowering. Camber is at -2* on both sides. Car is lowered via STAR and i drive in Sport 1 99% of the time.
See attached photos of the inside of the tires. This is after 3,000 miles.
What am i doing wrong???

How is you Caster? Caster stagger can cause this.
Also, don't rule out a dragging brake.
To me, your tire wear looks fairly normal for an AMG
Chris




i will try to dig up the alignment sheet and post it tonight.




With the alignment as is, do you really think that it explains the excessive wear on that inner portion of the tire? I cant agree... I agree that it'll wear more on the inside, but mine wore the inner portion down completely and the rest of the tire is at 90% tread life.
I see X5's and plenty other BMWs with noticeably more negative camber from factory, and i cant imagine that they all replace tires every 5-6K miles. Not to mention, my rears have the same negative camber and they are wearing completely normally. Same exact tires, all 4 bought and installed at the same time. I may be the first E55 whose rear tires will outlast the fronts.
Last edited by V-AMG; Feb 14, 2017 at 08:19 PM.
Your pull/steer is due to the front camber. The car will pull away from the side with the least amount of negative camber. In your case, that would cause the pull to the right.
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Your pull/steer is due to the front camber. The car will pull away from the side with the least amount of negative camber. In your case, that would cause the pull to the right.
Your pull/steer is due to the front camber. The car will pull away from the side with the least amount of negative camber. In your case, that would cause the pull to the right.
Had the alignment checked twice, all suspension parts are in good condition yet the car steers to the right and wears the insides of the tires pretty intensely. Just to point out, it doesn't pull right, it actually steers right. If i hold the wheel straight, it drives straight, but when i let go, wheel turns right by itself.
On the rack, i leave the car running so the airmatik doesn't settle, im in Sport 1 and i set the toe on the low end of the setting (nearest to 0) to accommodate for the extra negative camber due to lowering. Camber is at -2* on both sides. Car is lowered via STAR and i drive in Sport 1 99% of the time.
See attached photos of the inside of the tires. This is after 3,000 miles.
What am i doing wrong???





Ironically, mine steers towards the side with most negative camber, not most positive as you stated. See attached alignment sheet a few posts back (post #6).
Also, are you sure about needing to be more toe-in? I was always under the impression that when you have negative camber that its better to have toe more near 0 to avoid the additional scrubbing effect on the inside of the tire. Some toe in but less than spec'd. But I'm no expert, so please fill me in as this may be what I'm doing wrong.
Last edited by V-AMG; Feb 15, 2017 at 01:47 PM.
Ironically, mine steers towards the side with most negative camber, not most positive as you stated. See attached alignment sheet a few posts back (post #6).
Also, are you sure about needing to be more toe-in? I was always under the impression that when you have negative camber that its better to have toe more near 0 to avoid the additional scrubbing effect on the inside of the tire. Some toe in but less than spec'd. But I'm no expert, so please fill me in as this may be what I'm doing wrong.
You have the toe idea backwards. More tow in (positive tow) will scrub more on the outer edge of the tire. More tow out (negative tow) will scrub the inner edge.




You have the toe idea backwards. More tow in (positive tow) will scrub more on the outer edge of the tire. More tow out (negative tow) will scrub the inner edge.
And i did swap the tires. I was hoping that was it too but it didnt change a thing unfortunately. The weird wheel turning still continues and i have no clue what it may be... Could it be bump steer since im lowered now? I know the 90's mustangs would do this if lowered without a bumpsteer kit. Though i feel like there would be many reports of this and i havent seen any yet...






