[TKing]

The front end vibration thing has been talked about many times in CC and I don't think anyone has come to a solution. Some think the vibration is a product of the steering and suspension geometry or there is nothing we can do about it.

I tried to solve the problem on SPF 140 by alignment, tire shaving, Road Force balance, new tires, wheel bearing adjustment, high speed balancing and lost. I still had the vibration at 65 mph. My current SPF has the same problem, but to a lesser extent. Some person on FFR forum spent a lot of time determining the "roundness" of the hubs, wheels and tires and trued each and eliminated or significantly reduced the vibration. He balanced the tires as accurately as possible and then mounted the tire/wheel on the hub at opposite max run-out positions. I'm not sure I'm explaining this very well, but my hubs are each .005 max out of round. This measurement occurs at a specific location on the hub. The wheels are a max of .012 out of round. This occurs a 1 point on the wheel. I will mount the high points of the hub and wheel at opposite locations and see what happens. I ordered new wheels and tires, but I have not received the 2 of the wheels yet, so I don't know if my logic will make a difference or not.

This is a lot of trouble, but I hate the steering wheel shake.

Tom