Is something wrong with these cars or do I have bad luck here?
The tires were fine a couple weeks ago with good tread across the tire. Are these bridgestones just junk or do these cars beat the heck out of the inner edges on all four corners? Car tracks in a straight line perfectly, I don't fly around corners at all. Why does it keep eating inner tire edges? Again the thread is fine across the rest of the tire and this happened in a couple hundred miles of driving in the last couple weeks. Tires were built 22nd week of 2008. 4 year old tires shouldn't be rotting away and splitting like mad.
Has good tread across the tire including the area that's separating as shown in the second pic.
Bridgestone Potenza RE760 Sport

Last edited by BBBSS; Aug 27, 2012 at 05:43 AM.
The tires were fine a couple weeks ago with good tread across the tire. Are these bridgestones just junk or do these cars beat the heck out of the inner edges on all four corners? Car tracks in a straight line perfectly, I don't fly around corners at all. Why does it keep eating inner tire edges? Again the thread is fine across the rest of the tire and this happened in a couple hundred miles of driving in the last couple weeks. Tires were built 22nd week of 2008. 4 year old tires shouldn't be rotting away and splitting like mad.
Has good tread across the tire including the area that's separating as shown in the second pic.
Bridgestone Potenza RE760 Sport


The problem is when the car squats down when accelerating and/or hits a bump. If toe is out of whack, it gets even worse when the rear squats down. This is even worse when the car is lowered.
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Also to my knowledge the car was never lowered. Haven't found a single thing to make me think this car was ever modded in any way yet and I've gone through it pretty thoroughly at this point.
Last edited by BBBSS; Aug 27, 2012 at 01:27 PM.
If the tires were 4 years old, they should be replaced anyways. Porsche recomends every 4 Years mb is every 6 but with a amg or v12 every 4 years is good practice (if the tread lasts that long
) I "personally" have Had nothing but problems with Bridgestone's and Firestone's. I would get Michelin's, contis or a cheaper option hankook v12's
Also, we're the tires the correct load rating? Most people forget this important detail. If you have too low of a load rating, the sidewall will seperate or blow out.
Get a allignment at a dealer, they have a special romis tool to calibrate camber for ride height and they know how to properly level the airmatic before aligning it. Even with your lowered car. Most alignment shops don't know how to do this or have the proper equipment. Also, most Indy allignment shops screw up the allignment bolts. There unique to mb with slots in the bolts and tabs in the bushings.
Good luck
Good Luck.
I have done 3 alignments with vey good shops and other than needing a couple camber bolts once, no significant changes.
The F1 Asymentrics I actually got credit from TireRack.com as they identified it as a belt failure. The picture below is my car with in spec alignment.
These tires were on the car when I bought it last fall. I don't really know the history of them. The car had 51K miles on it when I bought it and didn't have a ton of miles put on the last couple years so I suspect it sat around a lot more then driving. This, the heat this summer, and that they are 4 year old Bridgestones may be what all combined to kill these things.
Also these Re760 Sports are rated as an "extra load" tire. 1609 lbs max in the stock front 245/40/18. Which is at a higher PSI then stock I'm sure, but it should be well in the tires load range.
Also worth noting the dealer history for the vehicle shows an alignment a few thousand miles ago. Possibly when these tires were mounted?
Last edited by BBBSS; Aug 28, 2012 at 03:01 AM.
I think I'll be taking the 2-3 mile drive to my local Firestone with my fingers crossed to see what they will do. I'm just over 4 years from manufacture date, so they'd pro rate, but mounting and balancing is apparently covered and the rest of the tire has a ton of tread left. If they'll go with its a bad belt that let go and cover it I may be able to get a tire for dirt cheap to get me by a couple weeks where I'd be more comfortable popping a grand on new tires.
http://www.bridgestonetire.com/custo.../platinum-pact
The thread I found this in with a fairly similar issue that seems to have been caught a lil earlier.
http://www.gencoupe.com/wheels-tires...r-pattern.html

These bolts, I assume they move the A/Arm outwards to reduce Camber?
There is enough material in the ball joint bolt (2-3mm) to oval the holes to allow the ball joint to be repositioned this amount. Would 2-3mm outward adjustment be similar to what the bolts can provide?

The inside treadwear was fine about 3 months ago and I'd stopped checking monthly since it seemed consistent from beginning of year to summer. Have no idea wtf happened to the alignment. Apparently somehow the rear toe-in got f'd up. Will go to the alignment shop to get toe checked ASAP. Should I get rear camber bolts as well? These Dunlop direzzas were mounted Summer of '10, ran 'em at 37psi. Car's not lowered, airmatic usually on comfrot.
Last edited by TonyC; Oct 26, 2012 at 03:11 PM.
i had bridgestone before and i felt that they burn out really fast. ive goodyear eagel now and for 5 mths daily no wear at all. but then i again i usuallly baby my cars.
i only push it once a while.
Everyone here is saying rear toe-in isn't adjustable, but the indy alignment guy (whom I've used previously) says it is. WTF to do? I'm on spare 19s right now, and really want to swap back to the 18s.











