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Shredding through tires! alignment issue?
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08-21-2017, 04:40 PM | #24 |
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The car has run for 150 000 km, the worn out tires have run approximately 20 000km and have about 4-5mm of tread left except for the inner half inch where it is totally worn out. The alignment specs are original and well within the tolerance. I have not seen any damage on the control arms and the car is always serviced at the local BMW dealership and they have not commented on any faults. I love to pull at the red lights.
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08-22-2017, 11:21 AM | #25 | |
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08-22-2017, 01:50 PM | #26 | |
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Someone else had a good looking alignment sheet too, but they found their aftermarket toe arms were not tightened so the car was not staying in alignment. can't help you over the internet beyond telling you that more toe (+ or -) = faster rate of tire wear. More camber = more wear on the instead of the tire vs the outside when driving in a straight line. |
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08-22-2017, 02:53 PM | #27 | |
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08-22-2017, 03:05 PM | #28 | |
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Other than that, who knows... |
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08-22-2017, 03:19 PM | #29 | |
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Since you're having issues with the rear tires only, you need to increase "toe in" out back. I run .1* total toe in the rear and have never had an issue, but it looks like you need a lot more to keep from burning up the inner portion of the tire. Given your current alignment specs, and the number of miles on your car, it looks like you got some worn bushings out back, etc. which are likely contributing to your tire wear issues. Time to give all your control arms, guide rods, toe arms, etc. back there a shake and see what needs replacing. |
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08-23-2017, 03:00 AM | #30 | |
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08-23-2017, 09:36 AM | #31 | |
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Also, with your miles there's likely to be a ton of worn out shit...really depends how far down the rabbit hole you're willing to go. |
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08-23-2017, 12:54 PM | #32 | |
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08-23-2017, 02:47 PM | #34 |
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Thanks for your answers, much appreciated! Still waiting for this mechanic to call me back and I will make sure to ask specific questions to a, get to know if he's a newbie at work or a well qualified BMW mechanic and b make sure I don't spend money on something that won't solve the issue!
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08-23-2017, 11:17 PM | #35 | |
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With the negative camber on these cars, an under inflated tire will wear on the inside and cause the excessive wear you describe. I had the exact same problem. I have had the car re-aligned and run the tires hard. I no longer have that issue. I also run the camber at the minimum negative value. I added camber plates to the front and run the front on the minimum negative also. I get much better tire wear. I don't miss the extra negative camber since I'm running 19x9 with a 245/35 in the front and a 19x9.5 and a 275/30 in the rear. The car feel planted. Since my car is not a track car, I can live with this. I need decent tire wear. You might try what I did.
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08-24-2017, 06:39 AM | #36 | |
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08-24-2017, 09:34 AM | #37 | |
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Anecdotally my setup is as follows: Camber F|R = -2.0*|-1.4* Total Toe F|R = 1/16"|3/32" My tires have lasted me 50,000 miles and counting. Wear is almost completely even across the entire face of each tire. Yes, I do have the benefit of rotating given that I run a square setup, but it still proves the point; if your only disposition for not burning through tires involves removing *all* camber, your car is broken...that is not a proper fix. |
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08-24-2017, 03:10 PM | #38 | |
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08-26-2017, 04:43 PM | #39 |
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Update: I was called up by a senior mechanic who will do a total checkup on my car, see how it reacts to a full load when checking the alignment, check the bushings, springs and shocks. Up front he feels that the shocks should last a bit longer but nothing will be left unturned. This will be done on the 7th of September and I will post here and let you know where this goes and what the solution will be. Thanks for all your input, I'll keep you all posted! Greetings from Sweden!
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08-27-2017, 09:30 AM | #40 | |
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Do yourself a favor and replce those dampers with more capable units. You'll wish you had done it a long time ago. |
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alignment, front tires, inside, tires |
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