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08-29-2016, 12:19 AM | #1 |
GB
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Rear Inside Tire Wear
During the recent service of my 135i at my BMW dealer they identified all four tires as "cords showing" but it was just one tire, the inside edge of the left rear tire. The right rear tire was also badly worn on the inside edge. The alignment was done when the M3 RSFB were installed. After replacing these tires I had the alignment checked again. It is to factory spec. The alignment shop offered to adjust the rear camber to decrease tire wear but also stated that performance would suffer if that was done. Not doing that.
I'm not complaining since the MPSS tires were pretty much done anyway but I do suggest that if you are trying to wring the last few miles out of your rear tires take a hard look at the inside corners not just the outside wear bars. You may see belts showing through earlier than you expected based on your last visual of the tread that you can see without getting underneath. |
08-29-2016, 07:19 AM | #2 |
Bergspyder
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What pressures did you run?
Ever checks temps across the tire face?
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08-29-2016, 11:34 AM | #3 |
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Drives: '98 Z3M (gone), '09 135i
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Every tire I've had, has worn slightly more on the inside in the rear, thought not to that extent
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08-29-2016, 12:51 PM | #4 |
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Not sure at this point since the dealer did set the pressures as part of their routine without noting what they were previously. The alignment guy did say that tire pressure could be a contributing factor although you would think that both outside edges would wear more if that was the case. I also read on another forum that staggered tires also contribute to this problem. I just wanted to suggest that people have a good look at the inside edges when their tires are nearing their end of life since they would not normally see the exposed cords.
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09-04-2016, 12:32 AM | #5 |
Second Lieutenant
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I had this issue with my front tires. bmw dealership aligned the car and camber was at the max recommended camber on the front so they never bothered to move it at the alignment. so the old tires were worn on the front like you are showing. then when my new tires started wearing the same exact way i took it back had them realign it and when they put it back to the center point not max it made the wear much more even. also the rear tires do have a toe setting. that could also be off.
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09-05-2016, 11:20 AM | #6 |
First Lieutenant
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How many miles are on the tires? Looks like you're close to the wear bars anyway. Having said that I'm surprised to see that much wear on the inside if you really are at factory settings. Looks like there was either a bit of extra negative camber or a lot of extra toe to do that.
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09-05-2016, 12:07 PM | #7 |
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I'm unsure of the mileage since I run Michelin PA3s in the winter. The tires were certainly down to the wear bars, at least in the centre and inside. The alignment guy did offer to set the camber so this would not happen but it would be at the expense of handling. I'm not complaining, just suggesting that if your tires are getting thin you need to really get down and look at the inside edges to ensure your belts are not already exposed. No one needs a blowout.
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