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Looking for some suggestions as to the cause of the excessive inner tire wear I am seeing on my last 2 sets of tires. First set lasted 4K miles, second set lasted maybe 8k miles at the most.
I have a 2014 GS350 AWD lowered with the J5 coilovers and the figs rear camber arm. Alignment was checked and adjusted to factory specs before the latest set of Michelin super sports went on. The shop mentioned the toe was way off causing the first set to wear prematurely. Now I'm starting to wonder if there's something not tightened down that is allowing the alignment to change over time?
Im also having the same issue with my rear tires, i only notice this when i have my wide 20 inch wheels installed, my stock wheels dont wear abnormal at all...
Im also having the same issue with my rear tires, i only notice this when i have my wide 20 inch wheels installed, my stock wheels dont wear abnormal at all...
I noticed the same thing too. I have 275 35 19"s on a 19x10" rear with a little inner tire wear. When I swap my stock wheels on in winter, rear tires show even wear. This is with figs rear upper camber arms and dropped on rsr coilovers on an awd.
I noticed the same thing too. I have 275 35 19"s on a 19x10" rear with a little inner tire wear. When I swap my stock wheels on in winter, rear tires show even wear. This is with figs rear upper camber arms and dropped on rsr coilovers on an awd.
Very odd, im AWD too, im glad im not the only one...i will get to the bottom of this in due time.
I work at a dealership so i put my car on the lift the other day to do some fluid changes and was inspecting the suspension and noticed torn bushings in the rear on the control arms, cant remember which one it was but im guessing it is one of the culprits of this issue. Im sure its causing some sloppyness, ill take another look and take pictures and post them here. Im planning on replacing them in the spring before i put the 20's back on and see if it will wear out my new tires.
remember lowering a car changes a lot of the geometry and the biggest thing people forget to do is to change the preload on ALL the bushings that were affected.
the preload is set to factory height then when lowered this position changes, twisting the bushings at rest.
if kept like so for too long it will cause premature bushing wear.
factory bushing are soft for that nice lexus ride, and they do wear over time. they just wear faster on lowered cars that fail to properly preload them.
what I ususally do is I take it to another shop for an alignment.
not all alignment shops are created equal. there are so many variables that equate to poor alignment.
tire pressure, alignment rack calibration, weight on the car loaded/unloaded, etc...
also when new wheels/tires comes into play, a new alignment should be done.
I know this is not cost effective but the wheels/tires are now slightly taller or shorter causing once again for the geometry to change.
remember lowering a car changes a lot of the geometry and the biggest thing people forget to do is to change the preload on ALL the bushings that were affected.
the preload is set to factory height then when lowered this position changes, twisting the bushings at rest.
if kept like so for too long it will cause premature bushing wear.
factory bushing are soft for that nice lexus ride, and they do wear over time. they just wear faster on lowered cars that fail to properly preload them.
what I ususally do is I take it to another shop for an alignment.
not all alignment shops are created equal. there are so many variables that equate to poor alignment.
tire pressure, alignment rack calibration, weight on the car loaded/unloaded, etc...
also when new wheels/tires comes into play, a new alignment should be done.
I know this is not cost effective but the wheels/tires are now slightly taller or shorter causing once again for the geometry to change.
I agree on the preload when lowering but I disagree with the taller/shorter tires causes geometry changes if it is a symmetrically tired AWD car.
I'm having the SPC arms installed today. To me, -2° camber is too much for rear wheels especially when it causes this kind of wear pattern that most people wouldn't see until the tire fails or is near failure.
I'm having the SPC arms installed today. To me, -2° camber is too much for rear wheels especially when it causes this kind of wear pattern that most people wouldn't see until the tire fails or is near failure.
07-31-17, 03:59 PM
Excessive Tire Wear
