Help! Need info for Alignment unusual tire wear? - The Unofficial BMW M5 Messageboard (m5board.com)

mruiz0280 · 11th June 2006, 17:28

On another thread I had posted that I saw some ususual tire wear on my Goodyear f1 supercar tires, and perhaps you folks and fill me in some knowledge.

I just recently replaced my driver's rear tire about 3 months ago and just yesterday i notice that the inside side of the tire( part facing inside the wheel well) is wearing much faster than the middle of the tire. I checked my front driver's tire and notice that same holds true with that tire as well. I checked the other tires and the passenger side tire is not showing signs of sigficant wear on the inside of the tire.

I know the BMW cars have negative camber. Would it be possible that the bushings are wearing more so on the left side of the car and would need to have them replaced?

gsfent · 11th June 2006, 17:42

Quote:

Originally Posted by mruiz0280

On another thread I had posted that I saw some ususual tire wear on my Goodyear f1 supercar tires, and perhaps you folks and fill me in some knowledge.

I just recently replaced my driver's rear tire about 3 months ago and just yesterday i notice that the inside side of the tire( part facing inside the wheel well) is wearing much faster than the middle of the tire. I checked my front driver's tire and notice that same holds true with that tire as well. I checked the other tires and the passenger side tire is not showing signs of sigficant wear on the inside of the tire.

I know the BMW cars have negative camber. Would it be possible that the bushings are wearing more so on the left side of the car and would need to have them replaced?

Get the car aligned. A good alignment shop can tell you if the bushings are worn. As a matter of fact, mine "refused" to the alignment until I replaced the worn bushings. Get both before and after specs so you can see what changes are made. Many folks prefer a shop with the Hunter alignment machine.

Since I assume you have the same pressures on both sides, the alignment is most likely, either out of spec and/or worn suspension parts. The rear tires will wear a little differently because of the torque loading, but I think it is the right side that wears out first.

BTW, what are your tire pressures? Lots of discussion about that on the board.
Regards,
Jerry

mruiz0280 · 11th June 2006, 18:08

Quote:

Originally Posted by gsfent

Get the car aligned. A good alignment shop can tell you if the bushings are worn. As a matter of fact, mine "refused" to the alignment until I replaced the worn bushings. Get both before and after specs so you can see what changes are made. Many folks prefer a shop with the Hunter alignment machine.

Since I assume you have the same pressures on both sides, the alignment is most likely, either out of spec and/or worn suspension parts. The rear tires will wear a little differently because of the torque loading, but I think it is the right side that wears out first.

BTW, what are your tire pressures? Lots of discussion about that on the board.
Regards,
Jerry

my tire max pressure is 44 psi,

I am running at 40 psi on all 4 tires, mostly because it is very hot down here in texas.

ard · 11th June 2006, 18:55

Agree with Jerry. Also make sure they align it to optimal toe and camber- not just "in spec". BMWs spec allows A LOT of toe in, which will scrub the tires 'right quick'. A few threads on alignment specs here.

mruiz0280 · 13th June 2006, 02:30

I just finish speaking with a rep from discount tire and he had told me, that was informed from the BMW service center that all european cars all have negative camber since over there, all their roads "built flat" vs US builds their roads at an "angle". The european cars are set to US roads so that is why in side all the tires are more worn vs the inside of the tire. Make sense but thursday i should get a clearer picture on my alignment on the beast. For right now she is on the injured play roster.