[shendrick]

I've got the standard 18" wheels. The PS2s from the factory were perfect. When I had to replace the fronts I used PS2s again. Even after 3 spin ups on a Hunter Road Force Balancer I also have a slight vibration at 80 and above which was never there before. Since nothing changed but the tires and the balance it has to be one of the two in my case. My advice is to first verify your wheels are first true - round and no run out. Then road force balance and ensure its perfect. If you still have problems, get a fifth wheel that is known to be perfect and swop out the suspect wheels one at a time to try to isolate where the problem is. If wheels are true and balance on a road force balancer is perfect then its got to be the tire. It would be great if anyone on this forum can explain how the Hunter road force balancer works in detail - since it has a variety of options when balancing.