Posted by Torvald [172.68.23.54] on Friday, September 13, 2024 at 00:49:29 :
Greetings all,
I have a puzzlement. A couple months back, after 7500 miles on these tires, I was finally able to take the time to rotate the wheels on Beast (�51 FFPW). At the same time I installed balancing beads in the former front and spare tires (the rears had beads installed when new), and I increased pressure on all tires to the recommended 50 psi. When I got it back out on the road I found a vibration at high speed (50 - 60 mph). The vibration was transmitted up to the steering wheel which would rotationally oscillate at an estimated 10 - 20 Hz (wheel rotation at 60 mph is 9.6 Hz). The weird part was that the vibration was intermittent; it would disappear for say, half a minute, and then reappear for a bit only to disappear again. After another 300 or so miles the vibration stopped rather suddenly; it was there on a trip to town and almost gone on the way back. Subsequent driving showed the vibration decreasing to the point where any steering wheel vibration can�t be distinguished from just road roughness. Now Beast drives as well as before the tire rotation (except for the stiffness from increased tire pressure).
The question I have is; what was causing the vibration? Has anyone had this experience?
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