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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Alignment question...



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      06-24-2012, 02:22 PM   #1
RedDinan335i
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Alignment question...

Left front seems to be wearing the outside edge much faster than the rest of the tire. Is this normal or is something out of whack? Right and left front pics attached.
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      06-24-2012, 02:29 PM   #2
CJ421
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Check your tire pressures first.
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      06-24-2012, 02:35 PM   #3
RedDinan335i
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Was running minimum recommended 32lbs for 6000 miles. Upped it recently to 37 lbs. I know the stock RFTs suck and will soon get Michelin PSS non-RFTs. These tires only have 7500 mi.
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      06-24-2012, 02:40 PM   #4
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Hard to tell from the photo, but it looks like you have positive camber. I'm not sure how an alignment could be thrown THAT far off without something being bent, but i'm definitely not a suspension expert. Toe is probably way off too for it to be wearing down that fast
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      06-24-2012, 02:49 PM   #5
CALWATERBOY
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Quote:
Originally Posted by tofu- View Post
Hard to tell from the photo, but it looks like you have positive camber. I'm not sure how an alignment could be thrown THAT far off without something being bent, but i'm definitely not a suspension expert. Toe is probably way off too for it to be wearing down that fast
Yes it does, very unusual. Or, you've been to the track, stock, quite a bit.

Can check on a level surface - I do mean level - by holding ~19" aluminum L extrusion [Ace Hardware] to your rim plumb bob vertical; holding an iPhone to the extrusion w/level application. Reads to 0.1° accuracy.

Toe w/string & jack stands.

Lots o'YouTube on this.
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      06-24-2012, 02:55 PM   #6
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I drive fairly agressive ex. fun in the twisties and such, but no track days.
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