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  1. #1
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    Tire wear-a word to the wise

    I've got a 4 year old 2005 2.5i Z4 that is primarily a garage queen and has under 18K miles. During a special free BMW post-warranty inspection, it was pointed out to me that the rear tires (RFTs)were getting unsafe, particularly the right rear one. A couple of reasons for this (even though I would check tire pressure every month and adjust accordingly-however the tires were wearing evenly and showing no signs of inflation or alignment problems). First, on inital starting, the right rear tire does more work than the left one. And, of course, the rear tires, in general will wear out before the fronts (present tread depth is 6/32) rear drive cars. And another important contributor to excessive rear tire wear is that I didn't rotate the tires.

    So, aside from keeping tires properly inflated, I strongly suggest that if you want to keep your tires as long as possible, rotate them. Now, there is another consideration: Could it be that I disliked these RFTs so much that I unconsciously let them wear out sooner than they should have??? Could be, could be.


    2002 TiSil/Blk 325i SP
    2005 Merlot/Tan Z4 2.5L

  2. #2
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    Re: Tire wear-a word to the wise

    In your case it would work since your wheels and tires should all be the same.

    If you have the Sport Pkg, you can not rotate your tires. This is because the front and the rear tires are not the same size.
    Front Wheel: 18x8 Tire Size: 225/40-18 RFT
    Rear Wheel: 18x8.5 Tire Size: 255/35-18 RFT
    (This is the size on my 04 3.0i)


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    Re: Tire wear-a word to the wise

    Tires same size on all corners. Even though I am not crazy about the RFTs, it was real stupid of me not to rotate tires front to back, same side as I know I would have had a lot more use out of them.


    2002 TiSil/Blk 325i SP
    2005 Merlot/Tan Z4 2.5L

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    Re: Tire wear-a word to the wise

    FWIW, BMW specifically recommends against rotating the tires, as they feel it compromises handling.

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    Re: Tire wear-a word to the wise

    Well, rotating the tires is OK, but instead of buying two rear tires, you now need four tires. The cost is about the same over a long period of time. As mentioned, sport package owners can't rotate.

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