I have an 83 911SC with 7&8 OEM fuch's. I get them balanced and they are quite smooth but after a month or so I notice some wobble. I dont drive the car very often, maybe 1 or 2 times a week @40 mi. max. When I do drive the car it is usually very spirited driving. The tires are in decent shape and are Kumho's. Could I be developing flat spots or could it be a suspension issue, though that looks fine? Does hard driving, cornering and sliding create a need for more frequent balancing?


Thanks
Scott

 

No, Fuchs don't go out of balance easier than any other wheel. My single biggest problem has been the bonehead mechanics applying wheel weights to the wheel without cleaning the surface before sticking them on. The weights just fall right off. Completely ignorant service personell. Sears did it to me twice. Even TireRack just this last week. You'd think they'd have such a simple technical step figured out by now. Damn.

Jens

 

Hi Scott:

Jens offered some great input and I'd "second" that.

One piece wheels, Fuchs or otherwise, do not go out of balance unless they suffer physical damage.

The root cause of balance issues are tire related. Lost weights, shifting casings, separated plies and tread can all change a tire's balance.

IMHO, most tire techs are sloppy about attaching wheel weights and this is an ongoing problem.

 

And if the tires are subject to heavy use close to the time they are mounted, they can actually rotate on the wheel. A recent thread on this board documented how a mark made on the tire by the valve could end up a full half rotation away from it after track driving. If you think about the energy a tire is transmitting to the wheel under high-speed full braking, for example, combined with the lubrication used to initially mount the tires still not being fully dry -- and it makes sense.

 

also, i might add that many tires have a mark on them that are suppose to be directly lined up next the air valve. why? that actually helps balance it.

edit... im a dumb *** shoulda read what jack said before i posted

 

I find that my tires will flat spot. But it only lasts for a few miles. Maybe you are not driving your car enough