On-car balancing is the best solution but not required. It's for all the "High speed" drivers. ;-) It is sufficent to say that you should at least have the tire spin balanced off the car at high speeds, generally spun at the tire manufactures speed rating. Steve --- In dmcnews@xxxx, patrickdmc@xxxx wrote: > > I saw the posts and was wondering if this was necessary? If mine > is not spin balanced will it damage something? Or is this a cure for > high speed vibrations that are hard to find? I'm not a DMC expert so > I really don't understand why this is important. > > Patrick > #1040