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  1. #1
    dpurciful is offline Porsche Person
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    Boxter rear tire wear

    My 03 Boxter is showing wear only on the inside of both rear tires. One tech offered to align it for $400. The second tech said thats just the way Porsche tires wear so get used to it. another posting on this site seemed to say I should start taking corners faster to even out the wear. what do you think?


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    Re: Boxter rear tire wear

    Or if you dont corner faster, perhaps increase your rear camber!


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    Re: Boxter rear tire wear

    Quote Originally Posted by dpurciful View Post
    My 03 Boxter is showing wear only on the inside of both rear tires. One tech offered to align it for $400. The second tech said thats just the way Porsche tires wear so get used to it. another posting on this site seemed to say I should start taking corners faster to even out the wear. what do you think?
    The Porsche stock alignment on my 07 BS is 1.5 degrees of negative camber in the rear. This means the rear tires tip in at the top. Consequently, the inside of the rear tires wear quicker. $400 for an alignment seems pretty high. If the alignment shop sets up the rear to "spec", the inside edge will still wear quicker for normal street driving. More spirited driving may even out the wear some, just a fact of life with a mid-engine car...

    You can ask an alignment shop to take some of the negative camber out if your driving is mostly on the street. That would be an option I suppose...

    PS - This isn't just Boxster specific. Check out any Porsche cruising along and you'll see a fair amount of negative camber in the rear.
    Last edited by Krazed1; 08-07-2009 at 06:28 AM. Reason: Add another thought

  4. #4
    dpurciful is offline Porsche Person
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    Re: Boxter rear tire wear

    Quote Originally Posted by Krazed1 View Post
    The Porsche stock alignment on my 07 BS is 1.5 degrees of negative camber in the rear. This means the rear tires tip in at the top. Consequently, the inside of the rear tires wear quicker. $400 for an alignment seems pretty high. If the alignment shop sets up the rear to "spec", the inside edge will still wear quicker for normal street driving. More spirited driving may even out the wear some, just a fact of life with a mid-engine car...

    You can ask an alignment shop to take some of the negative camber out if your driving is mostly on the street. That would be an option I suppose...

    PS - This isn't just Boxster specific. Check out any Porsche cruising along and you'll see a fair amount of negative camber in the rear.
    Thank you for the insight. I didn't know they were supposed to be that way. I'll just buy new tires and stop worring about it.

  5. #5
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    AlexMcNabb is offline Porsche Activist
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    Way too much for an alignment!

    And if I remember correctly, there's a good DIY on this very website on how to do it yourself. I'd be more concerned about a possible toe issue, I know one of my rear wheels got knocked out of whack somehow or other.

  6. #6
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    Re: Way too much for an alignment!

    I highly recommend getting an alignment Before you get new tires. Seeing the old tires, and your current settings, a good tech can recommend settings that are (likely) within Porsche recommendations and still perhaps tailor (esp camber) just a bit for your driving style. (I.e., if you mostly drive on the freeway, he/she could set the rear camber a little less negative). This would also identify if the current alignment is out-of-spec. These cars can be aligned to wear evenly if desired. The negative camber is there to allow aggressive cornering - not due to anything inherent to mid-engine or Porsche designs. Also, any good alignment shop can properly align these cars (I would take the Porsche-recommended settings with you, supply the tech with them, and discuss your wear issues. Good luck. Jeff G.

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    Right on.

    My rear tire wear is even, and I track/AutoX my car.

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    Re: Boxter rear tire wear

    Quote Originally Posted by dpurciful View Post
    My 03 Boxter is showing wear only on the inside of both rear tires. One tech offered to align it for $400. The second tech said thats just the way Porsche tires wear so get used to it. another posting on this site seemed to say I should start taking corners faster to even out the wear. what do you think?
    I had trhe same issue. My rear Toe was way off. A four wheel alignment cost me $110...
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  9. #9
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    Re: Way too much for an alignment!

    Quote Originally Posted by Jeff G in NE GA View Post
    I highly recommend getting an alignment Before you get new tires. Seeing the old tires, and your current settings, a good tech can recommend settings that are (likely) within Porsche recommendations and still perhaps tailor (esp camber) just a bit for your driving style. (I.e., if you mostly drive on the freeway, he/she could set the rear camber a little less negative). This would also identify if the current alignment is out-of-spec. These cars can be aligned to wear evenly if desired. The negative camber is there to allow aggressive cornering - not due to anything inherent to mid-engine or Porsche designs. Also, any good alignment shop can properly align these cars (I would take the Porsche-recommended settings with you, supply the tech with them, and discuss your wear issues. Good luck. Jeff G.
    This is the best advice for your situation... take it to heart.

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  10. #10
    dpurciful is offline Porsche Person
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    Re: Boxter rear tire wear

    Thank you for the advice. I'll find a different alignment shop.

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