After much thought and recommendations from forum members I sprung for a set of 285/35ZR19 Michelins Pilot Sport 4s tires for my HPDE Mustang. After receiving them I was very disappointed to find out Michelin does not balance test tires at factory and that tires do not have any balance marks (red or yellow dots). When installed I wound up with two wheels that had at least a dozen balance weights on them. I was not happy as I've had bad luck trying to keep heavy balance weights from coming off the rim after track sessions even with silver reflective tape over the weights. Even after a cool down lap with brake cooling, radiated heat from brakes on stopped car cooks and degrades adhesive. You'd expect for what Michelins cost that they would balance test their tires so the minimum number of balance weights would be required. Just venting!!