996 Carrera 4 S - uneven rear tyre wear query
Discussion
Hi folks,
I have now clocked up 4,000 miles in my 4S and the car handles like it is on rails. I cannot fault the way it drives one bit.
However, I have noticed the inside quarter of both of my rear tyres is wearing quicker than the outside three quarters.
Is this to be expected?
I am reluctant to mess about with steering geometry and suspension as the car handles so well.
Any guidance much appreciated.
Many thanks!
I have now clocked up 4,000 miles in my 4S and the car handles like it is on rails. I cannot fault the way it drives one bit.
However, I have noticed the inside quarter of both of my rear tyres is wearing quicker than the outside three quarters.
Is this to be expected?
I am reluctant to mess about with steering geometry and suspension as the car handles so well.
Any guidance much appreciated.
Many thanks!
Vroom2 said:
Hi folks,
I have now clocked up 4,000 miles in my 4S and the car handles like it is on rails. I cannot fault the way it drives one bit.
However, I have noticed the inside quarter of both of my rear tyres is wearing quicker than the outside three quarters.
Is this to be expected?
I am reluctant to mess about with steering geometry and suspension as the car handles so well.
Any guidance much appreciated.
Many thanks!
Based on covering over 264K miles in my Boxster and over 105K miles in my Turbo -- I leave it up to you to imagine the number of tires I have gone through over these miles -- all I can say is that inside rear (or front) tire wear is a sign the alignment is off.I have now clocked up 4,000 miles in my 4S and the car handles like it is on rails. I cannot fault the way it drives one bit.
However, I have noticed the inside quarter of both of my rear tyres is wearing quicker than the outside three quarters.
Is this to be expected?
I am reluctant to mess about with steering geometry and suspension as the car handles so well.
Any guidance much appreciated.
Many thanks!
While the car may feel/handle ok the rear toe (at least) is wrong.
With the tires worn like they are though an alignment at this time may not help much. Worn tires affect the quality of the alignment. With worn tires the outcome may not be as good as it would be with new tires.
Thus it is up to you: leave the car like it is for now, and when the tires need replacing then have the car properly aligned; or have the car properly aligned now with the very real chance the alignment may be less the ideal.
I've gone both ways. In the latter case with the front tires on the Turbo howling like crazy the alignment was done to try to quiet the tires down to a tolerable level. This it did but I had to drive the car some miles until the tires adapted to the new alignment settings.
The tech advised me the alignment may not be as good as it would be with new tires but due to the noise I was willing to take that chance. The alignment felt ok afterwards. The car's steering wheel was centered, the car didn't pull or wander about. Really the alignment felt just fine to me.
Unless the tires are worn to the belts on the inside edges my preference would be to get the alignment done even with the tires like they are. (Side note: if the rear tires are worn very much on the inside edges they may be due to be replaced. They are dangerous.)
With a proper alignment tire wear will be spread out over the tread faces of the rear tires and you'll get some extra miles from the tires.
'course, when the current set of rear tires wears out and new rear tires are fitted you really should have the car aligned again.
On a 1 degree camber set up which is a road set up you would have 5mm of tread to scrub off the inside edge before it's flat on the tarmac over a 12" wide tyre.
If you get 6000 from a pair of rears that's about your lot..!, I would leave it until they fooked and get the alignment checked when you replace the tyres to make sure the toes are in spec, unless you want to preserve what's left if it's worth it...!
If you get 6000 from a pair of rears that's about your lot..!, I would leave it until they fooked and get the alignment checked when you replace the tyres to make sure the toes are in spec, unless you want to preserve what's left if it's worth it...!
Edited by RatBoy M3CSL on Sunday 17th March 17:43
drmark said:
Not sure I agree with all of the above. If you have a 997 running 305s at the back then faster inside wear occurs with factory geo. And, depending on driving style, use and brand of tyres you can get 10+K out of rears on a C4.
Really? I have 305 rears with 'factory geo' and they are wearing nice and evenly. Their predecessors wore out in the middle so I run these at .2 bar below the book, as advised by my indie.I do agree that you can get 10k + miles unless you drive on track or like a muppet.
And I am with you about the earlier info. The problem seems far more likely due to excessive camber than toe.
REALIST123 said:
Really? I have 305 rears with 'factory geo' and they are wearing nice and evenly. Their predecessors wore out in the middle so I run these at .2 bar below the book, as advised by my indie.
I do agree that you can get 10k + miles unless you drive on track or like a muppet.
And I am with you about the earlier info. The problem seems far more likely due to excessive camber than toe.
Mine have always been 1-2mm lower on inner edge - but little motorway work and lots of A roads, twisty B roads and hills.I do agree that you can get 10k + miles unless you drive on track or like a muppet.
And I am with you about the earlier info. The problem seems far more likely due to excessive camber than toe.
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