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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHUneven wear on rear tire normal?
Reported or suspected cause
acceleration torque
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
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Reported cause
I was told that uneven wear was due to acceleration torque, but I have no real idea whether my alignments were done correctly, or stayed true.
Leading evidence: 'acceleration torque' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'acceleration torque' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace bit more difficult' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Due to a premature puncture, I have changed a partially worn right rear with a new tire and it then wore out at essentially the same time as the left.
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Suspected cause
If it was the latter, then that is why you have over steer.
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Suspected cause
mine always wear out unevenly but I always figured it was the way I drive the car...
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I'm seeing a
significant difference in wear pattern on my right rear tire:
* The inside tread is much more worn down than the outside.
* The wear pattern on the other three tires looks much more consistent, including the other rear tire and the right hand front.
I expect to have my rears wearing faster than my fronts, but
the uneven tread wear pattern on a specific tire has me worred. Is this normal?
Any advice on this? Thanks!
Is it a C-4? I have the same problem. My right rear needs replacing but the others have a few miles left on them. I don't think it's a camber issue but I'm curious to know if you've got a C-4.
My 2000 C4 is wearing more on the inside right as well. I had an alignment when the tires were installed. I'm guessing that somehow it got knocked out enough to cause this. I can't imagine it's supposed to wear more in the right due to alignment spec.
My C2 right rear went the same way. I was told that uneven wear was due to acceleration torque, but I have no real idea whether my alignments were done correctly, or stayed true.
mine always wear out unevenly but I always figured it was the way I drive the car...
..I slide around and punch it in the curves...and I favor one side much more...
...I swap them over at about 5,000 miles to even it out...
Can you swap the rear tires from side to side? On my other car, which has PS2s, the tread is directional
and asymmetric
, so I don't think I can swap left and right rears. My 996 has Proxes T1-Rs (unfortunately); not sure about them.
...you take them to the tire-guy...and 20 bucks later all is swapped...
they are quite familiar with these requests...
however, Sumi III's are not directional, so I can 'just do it'...they are just marked 'Outside'...
(albeit, NOT N-Rated though...)
The right rear normally wears faster as it is the drive wheel and our cars don't have limited slip so Frankfast has it right. Even with a perfect alignment, the negative rear camber puts more pressure on the inside of the wheel and causes it to wear faster.
Due to a premature puncture, I have changed a partially worn right rear with a new tire and it then wore out at essentially the same time as the left. One suggestion is that after you get new tires, you can ask your alignment shop to reduce your negative camber in the rear to the minimal range of the spec. This will improve your tire wear pattern and I really doubt you'll be able to tell the difference on the street. I know I couldn't...
Tonger
+1 on all the camber talk.
The only way to even it out is to have the tires taken off and remounted every 5K-10K miles (depending on wear).
In my C4 though, I notice one of my rear tires is more worn than the other....wonder why..maybe I take more left turns than right or something :P.
i remounted on my front summer tires. i did notice a pronounced over steer with the "less worn" side on the inside. these are on PS2's and my car is a C4.
It probably has more to do with incorrect toe setting than too much negative camber. As others have said an alignment should solve it. I have 1.5 negative camber in the rear of my car and tire wear is fine but I have the toe basically set at zero .. (just a hair of toe in)
2001 C4 with X74 suspension
Thanks for the advice, guys!
I appreciate it. It's good to hear my situation is pretty normal.
Sure makes tire changes a bit more difficult. Maybe I need to replace just the right rear soon and then replace the whole set a bit later...Timing should be just right, 'eh Tonger?!
I'm looking to move away from my Proxes T1Rs and get into PS2s; guess I'll have to buy another Proxes first, tho'
When you said you "remounted" your tires did you a) put your summer tires back on the car, or b) did you remove the tires from the rim and mount the tires with the outside on the inside of the rim? If it was the latter, then that is why you have over steer.
The PS2's are non directional asymmetrical tires, which means that they have an inside and an outside tread design. You can rotate the wheel and tire from left to right and right to left, but you should not remount the tires on the wheels so the outside of the tire is on the inside of the wheel.
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