Uneven Rear tire wear
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Uneven Rear tire wear
Yesterday, I had a few hours to kill so I washed my car and decided to take the wheels off and give each one a thorough cleaning. I discovered that the rear tires are wearing unevenly. I have Michelin Pilot Sports. The center grooves on the LR are barely visible while on the RR there is about 1/8" remaining. I also have more wear on the inner but that is due to the neg camber.
The car has been corner balanced and aligned and seems to drive straight. What could be causing this uneven wear. I don't think I make more right turns than left.
The car has been corner balanced and aligned and seems to drive straight. What could be causing this uneven wear. I don't think I make more right turns than left.
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IMO, 44 PSI in the rear tires is too high. Once the tires warm up, there could be 49 - 51 PSI back there. I had a similar issue with my first set of P-Zeros on the rear. I had to replace them at 8,500 miles. I ran the new tires at 38 PSI and got relatively even tire wear and 12,500 miles out of that set. Remember, this is just my opinion and... your mileage may vary.... without expressed written consent, is prohibited... some restrictions apply.... and all of the other happy horse-**** the lawyers concoct to cover their asses. .
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When I tracked the car, I usually ran 38 hot in the back. Riding around on the street they are around 42. The curious thing is the uneven wear between left and right cause I am pretty religious about checking my pressures and keeping them even. I'm due for replacements so I don't want the same thing to happen to the new tires.
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Oscar, Does your car have LSD?
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44 PSI in the Rear and 36 PSI in the Front... This is good for Daily Driving and some "Spirited" driving? It is the Factory Specs...
PS: i dont Track my car, but do the ocational Donuts
PS: i dont Track my car, but do the ocational Donuts
#9
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Originally Posted by Zookie
44 PSI in the Rear and 36 PSI in the Front... This is good for Daily Driving and some "Spirited" driving? It is the Factory Specs...
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Alan,
I am embarrssed to say that I don't know if my silver car cas LSD. It's a 1999 C2. Was LSD standard on that model? Can I find this from the VIN?
I am embarrssed to say that I don't know if my silver car cas LSD. It's a 1999 C2. Was LSD standard on that model? Can I find this from the VIN?
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Oscar,
The answer to your two questions is the same: No!
You need to check your options to see if you have a LSD and I would easily put my money on the fact that you don't. The standard LSD option code is M220, but there may be another number if it was fitted by TEquipment. You look for the option codes on the label in your original service record book or on the car.
Ciao,
Adrian.
The answer to your two questions is the same: No!
You need to check your options to see if you have a LSD and I would easily put my money on the fact that you don't. The standard LSD option code is M220, but there may be another number if it was fitted by TEquipment. You look for the option codes on the label in your original service record book or on the car.
Ciao,
Adrian.
#12
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Originally Posted by Oscar
Alan,
I am embarrssed to say that I don't know if my silver car cas LSD. It's a 1999 C2. Was LSD standard on that model? Can I find this from the VIN?
I am embarrssed to say that I don't know if my silver car cas LSD. It's a 1999 C2. Was LSD standard on that model? Can I find this from the VIN?
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Originally Posted by 1999Porsche911
If you have traction control, you most likely have LSD.
#14
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Originally Posted by Patrick
I think that is the opposite. If you have traction control, you don't have the LSD as its function is replaced by the traction control. That is true for PSM at least.