PDA

View Full Version : TX Excessive Rear Tire wear 2008 4.8i X5 20 inch sport



sackripper
08-11-2012, 07:59 PM
So the wife comes home, a cop stopped her for a drivers side rear tyre worn thru to the braiding , bad husband you say ,, pretty wife and nice cop so no ticket.:cool ,, but the tires are 9 months/12000 miles since new ! :embarrasm

Bought the certified Pre Owned 2008 X5 from the BMW dealership fully loaded (7 seater) with those beautiful 20 inch rims, and new BMW standard Dunlop Sportsmaxx 315/35/ R20. Runflats

Straight roads, no corners (yes Houston Texas !) . Roads are mainly concrete (like coarse sandpaper) and road noize is very high as a result .

Drivers side has worn thru to the braiding and passenger side is worn and is next.
Both badly worn on the inner edge, 2 inches from the tyre wall.
The middle and outside of the tires are 'new' , even have the injection molding needles on the outer wall (Its Texas, no corners !)

So its the Negative camber (reading your minds)
The two will cost me $1450 with setup, which is without Nitrogen.
Local GY tire shop says he gets two victims a week.

Ive seen a few posts (Tire Rant) with similar bit not as extreeme >? Tires arent feathered. Car was just in for a service as offside front suspension bushings creaking (replaced under maintenance plan)

What are the standard camber settings for the sports package and what settings can I tell the Dealer ($300) to reset the camber to to be neutral and get even tyre wear >?

Should I shoe it with the same standard OEM rubber or has anyone a texas proof tire that can give 2 x the life ? This is $322 per month tire wear !

I had an M5 pre Kids, and own a Porsche and both driven 'in a fun manner' but neither go thru tires like this on my wifes Mall car .

M62pwrdE38
08-11-2012, 09:10 PM
Low profile tires tend to wear a lot faster than tires with more sidewall. Combine that with the very wide footprint and then add crappy runflats that wear terrible and the excessive negative camber BMW wants on anything with a sport package and there you go: bald inner edges in 12k miles. I would ask the dealer or an independent shop to set the alignment either to non sport specs or at least bump the rear camber to its max positive setting, and get 4 non runflat tires.

sackripper
08-12-2012, 04:20 PM
Thanks for the advice

Looking for harder compound and non runflats (not sure what the runflat issue has to do with wear but Ive seen the same comment )

The car definately rund better fully loaded with family and luggage, must be the Camber settling to neutral

Again thanks for your time.