Question about tire wear

C4S4SS · 08-15-2007, 06:57 PM

I have an 06' 330 with 162's and run flats with 27,000 miles. I took a look under the car the other day and the inside of the rear tires are completely worn while the outside have plenty of wear remaining. There is obviously too much negative camber built into the suspension. Since the camber is set at the factory (car has never been damaged), should BMW be partially responsible for the replacement of the tires or am I lucky to get 27,000 miles out of these tires? Thanks

CnoteMD · 08-15-2007, 08:42 PM

I think for performance tires and such a low treadwear rating (140), the wear is actually pretty good. I have about 20K miles on mine with probably another 7-10k miles to go). I had prepared myself for replacing the tires every 12k miles prior to purchasing this car, so I am pleasantly surprised.

The alignment does cause the inside of the rear tires to wear faster, but this seems to be the case with many performance cars. From what I have seen Porsche's have the same problem, if not worse. Have you noticed similar wear on your 993TT?

ward · 08-15-2007, 08:48 PM

without that negative camber, the car wouldn't handle as well as it does

27K is good mileage for sport pack tires

good handling comes at the expense of tire life

C4S4SS · 08-15-2007, 10:12 PM

Quote:

Originally Posted by CnoteMD

I think for performance tires and such a low treadwear rating (140), the wear is actually pretty good. I have about 20K miles on mine with probably another 7-10k miles to go). I had prepared myself for replacing the tires every 12k miles prior to purchasing this car, so I am pleasantly surprised.

The alignment does cause the inside of the rear tires to wear faster, but this seems to be the case with many performance cars. From what I have seen Porsche's have the same problem, if not worse. Have you noticed similar wear on your 993TT?

I have had every 3 series dating back to a 320i in the early 80's and I have never had uneven wear on the rears. Oh well, if they are at the end of their life, so be it. As far as my 993TT goes, it is a 600hp car and I would be lucky to get 5000 miles on the rears. That is a different story though. Thanks

ward · 08-15-2007, 10:23 PM

Quote:

Originally Posted by C4S4SS

I have had every 3 series dating back to a 320i in the early 80's and I have never had uneven wear on the rears. Oh well, if they are at the end of their life, so be it. As far as my 993TT goes, it is a 600hp car and I would be lucky to get 5000 miles on the rears. That is a different story though. Thanks

as the cars get heavier, they have to make the suspension more agressive to retain handling prowess...

I don't have access to alignment specs, but I'd wager there's more rear negative camber stock on the E9X than there was on say the E30 or E21

CnoteMD · 08-15-2007, 10:23 PM

Quote:

Originally Posted by C4S4SS

I have had every 3 series dating back to a 320i in the early 80's and I have never had uneven wear on the rears. Oh well, if they are at the end of their life, so be it. As far as my 993TT goes, it is a 600hp car and I would be lucky to get 5000 miles on the rears. That is a different story though. Thanks

This may be off topic, but you should post some pics of the 993. They are amazing cars and it sounds like yours is an incredible machine!

ward · 08-15-2007, 10:24 PM

Quote:

Originally Posted by CnoteMD

This may be off topic, but you should post some pics of the 993. They are amazing cars and it sounds like yours is an incredible machine!

the 993 was and still is a beautiful machine

ejazbmw · 08-15-2007, 11:32 PM

damn I have 12000miles on mine and the tires are almost done...i think it's because my 325 came with the crappy tires before the changed them to whatever they are now....

Ray · 08-16-2007, 01:09 AM

Quote:

Originally Posted by ward

without that negative camber, the car wouldn't handle as well as it does

27K is good mileage for sport pack tires

good handling comes at the expense of tire life

+1

The suspension was dialed to excel in handling, thus the need for negative camber. If you attemt to align the vehicle again, you will realize that the specified range for your car will be negative.

27K is excellent for a car of this caliber in addition to the wheel/tire size.

I too love the the 993. One of my favorite cars of all time.

C4S4SS · 08-16-2007, 11:10 AM

Thanks for all the replies. Here are a couple of pics of my 993's. The red C4S has been sold and the silver 993TT is my current toy.

JoeyG · 08-16-2007, 11:53 AM

Quote:

Originally Posted by C4S4SS

I have had every 3 series dating back to a 320i in the early 80's and I have never had uneven wear on the rears. Oh well, if they are at the end of their life, so be it. As far as my 993TT goes, it is a 600hp car and I would be lucky to get 5000 miles on the rears. That is a different story though. Thanks

The Porsches are SCARY. I took our 996tt Cab. in for servicing at the beginning of the summer. They called me and said it was dangerous to drive home because the tires were down the cord. Earlier that week I had gotten under the car and looked and the tires appeared to be perfect! Turns out as soon as the car was put on the lift you could see where the camber had previously disguised. Be careful!

JoeyG · 08-16-2007, 11:54 AM

Quote:

Originally Posted by C4S4SS

Thanks for all the replies. Here are a couple of pics of my 993's. The red C4S has been sold and the silver 993TT is my current toy.

I've seen your Silver TT on 6speed... it's in my top 5 fav. Porsches EVER (your particular car).

C4S4SS · 08-16-2007, 12:53 PM

Thanks Joey, amazing how many people are on all the different car forums. For 993's, Rennlist is the best

. Good luck with the turbo cab, they are very nice cars.

Jaws · 08-16-2007, 01:19 PM

Quote:

Originally Posted by ward

I don't have access to alignment specs, but I'd wager there's more rear negative camber stock on the E9X than there was on say the E30 or E21

I agree, there is a definitely a more aggressive "slant" to the E90 rear tires when compared with previous gens. This will contribute to faster tire wear.

To the OP, go with a tire with higher treadwear rating if you are concerned with tire life.

VMRWheels · 08-16-2007, 03:22 PM

Check the rear toe as well, as improper toe eats away at tires more than neg. camber does.

Meet · 10-01-2007, 05:55 PM

I had this same problem but i only had 3000 kms on my right rear tire (i had to get it replaced before as i had a nail in it)and it was completely worn down to the wire, when i got an alignment check everything was only off by .08 of a degree and now i have to buy another $1000 run flat tire and bmw wont take responsablitly for a left tire that has 16000km on it and is fine and a right tire that has 3000 km and is completed destroyed

08-15-2007, 06:57 PM	#1
C4S4SS Private First Class 16 Rep 180 Posts Drives: I3, E92 M3, 993TT, X5 F15 Join Date: Oct 2005 Location: Westlake Village, Ca. iTrader: (1)	Question about tire wear I have an 06' 330 with 162's and run flats with 27,000 miles. I took a look under the car the other day and the inside of the rear tires are completely worn while the outside have plenty of wear remaining. There is obviously too much negative camber built into the suspension. Since the camber is set at the factory (car has never been damaged), should BMW be partially responsible for the replacement of the tires or am I lucky to get 27,000 miles out of these tires? Thanks
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08-15-2007, 08:42 PM	#2
CnoteMD Commander in Chief 37 Rep 1,034 Posts Drives: 2008 BMW 535i Join Date: May 2005 Location: Atlanta, GA iTrader: (0) Garage List 2008 M5 [0.00] 2006 330i [0.00]	I think for performance tires and such a low treadwear rating (140), the wear is actually pretty good. I have about 20K miles on mine with probably another 7-10k miles to go). I had prepared myself for replacing the tires every 12k miles prior to purchasing this car, so I am pleasantly surprised. The alignment does cause the inside of the rear tires to wear faster, but this seems to be the case with many performance cars. From what I have seen Porsche's have the same problem, if not worse. Have you noticed similar wear on your 993TT? __________________ 2008 BMW 535i Space Gray, Black Leather, Dark Bamboo Trim\| Sport Automatic with Paddles \| Sport Package 2008 BMW M5 (gone, but not forgotten) Space Gray, Silverstone Merino Leather, Madeira Walnut Wood Trim \| 7speed SMG \| All options Mods: Corsa Exhaust \| RPI Ram Air Intake \| H&R Sport Springs \| Rogue Engineering 12mm spacers
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08-15-2007, 08:48 PM	#3
ward Major General 155 Rep 6,158 Posts Drives: F Join Date: May 2005 Location: T iTrader: (0)	without that negative camber, the car wouldn't handle as well as it does 27K is good mileage for sport pack tires good handling comes at the expense of tire life
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08-15-2007, 11:32 PM	#8
ejazbmw blahhh 304 Rep 6,355 Posts Drives: 2014 M235I Join Date: Apr 2007 Location: NJ/NY iTrader: (7)	damn I have 12000miles on mine and the tires are almost done...i think it's because my 325 came with the crappy tires before the changed them to whatever they are now....
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08-16-2007, 11:10 AM	#10
C4S4SS Private First Class 16 Rep 180 Posts Drives: I3, E92 M3, 993TT, X5 F15 Join Date: Oct 2005 Location: Westlake Village, Ca. iTrader: (1)	Thanks for all the replies. Here are a couple of pics of my 993's. The red C4S has been sold and the silver 993TT is my current toy.
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08-16-2007, 12:53 PM	#13
C4S4SS Private First Class 16 Rep 180 Posts Drives: I3, E92 M3, 993TT, X5 F15 Join Date: Oct 2005 Location: Westlake Village, Ca. iTrader: (1)	Thanks Joey, amazing how many people are on all the different car forums. For 993's, Rennlist is the best . Good luck with the turbo cab, they are very nice cars.
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08-16-2007, 03:22 PM	#15
VMRWheels BimmerPost Supporting Vendor 2045 Rep 25,989 Posts Drives: BMW Join Date: Jun 2007 Location: Anaheim, CA iTrader: (4) Garage List 2013 BMW M3 [10.00] 2015 BMW M4 [0.00] 2013 BMW F30 [0.00] 2014 BMW F22 [0.00] 2013 BMW F06 [0.00]	Check the rear toe as well, as improper toe eats away at tires more than neg. camber does. __________________ VMR\|Wheels \| 714.442.7916 \| sales@velocitymotoring.com \| www.velocitymotoring.com \| facebook \| flickr \| Instagram
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10-01-2007, 05:55 PM	#16
Meet New Member 1 Rep 21 Posts Drives: 2007 Space Grey 335i Join Date: Jan 2007 Location: Surrey,BC iTrader: (0)	I had this same problem but i only had 3000 kms on my right rear tire (i had to get it replaced before as i had a nail in it)and it was completely worn down to the wire, when i got an alignment check everything was only off by .08 of a degree and now i have to buy another $1000 run flat tire and bmw wont take responsablitly for a left tire that has 16000km on it and is fine and a right tire that has 3000 km and is completed destroyed
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