I have had these on my wheels now for approximately a month. Dont expect much in the way of correcting tires that have started the downhill slide, the cupping and irregular wear. I had to change tires today from Avon Cobra's to Bridgestones. Now i dont have the silky ride i use to have with a good spin balance, at least today i didnt and i was riding on some nice highway. Now i will give them a fair chance to see what they can do... BUT if they dont get any better than what they are right now .. they will end up at the bottom of the river.