Front tire bouncing is this a balance problem

[mayojuaf]

Last Saturday I took my 2003 k1200rs to the BMW dealer in West Houston and replaced both tires and replaced rear pads. When I got the bike back I just took the freeway (the place is at the side of the freeway) and rode home at 75 mph

Next day I went for a ride and notice that between 25 and 45 mph the front tire was like bouncing or hopping. I live 60 miles from the dealer so on Tuesday I took the bike and explained to the service manager what my problem was. He took his helmet and went for a ride. He came back and he said he did not feel anything. I asked if he had drove at those speeds and he said that if the tire was not balanced we should feel the bouncing between 50 and 80 mph. End of story is that he said the tire and the balancing is fine and I must be confused…
I came back and felt the same very noticeable hopping at 25 35 mph.

As I had put a 280 55 17 in the rear 5 inch rim, I thought that may be that could be the problem?

I feel as an idiot being screw by the dealership

I am not taking the bike there again but you think that by using Dynabeads I can fix the problem?

[john1691]

As I had put a 280 55 17 in the rear 5 inch rim, I thought that may be that could be the problem?



Do you mean 180? Even so, I can't imagine it would create an issue with the front end. It seems it would have to be way out of balance for tire hop, and logically (to give the service manager the benefit of the doubt) the faster you go, the more noticeable the problem. Unfortuneatly, tire balance is an odd thing. My truck feels out of balance at 50, but smooths out at 70, go figure. I have never used tire beads, but have read threads on this forum of people who swear by them. I'd think it is worth a try.

[hhshort]

First I would check both tires
Jack the bike up so that you can spin the wheels freely and make sure the tire bead has been fully set on the wheel. There is usually a mold line on the tire and it should be even all the way around the wheels. Then check the tires for round.

Here is the one you may not believe. Check the brake rotors for true. I chased a headshake and a wheel hop all over my bike untill I replaced a warped rear brake rotor.

'Yaa Sure you are confused and are just imagining a wheel hop. Harold

[mayojuaf]

guys I screw up as I posted the question in the K and the airhead (sorry administrator) nevertheless this is the shortcut to the final answer to the problem
http://www.bmwmoa.org/forum/showthread.php?t=30017

[deilenberger]

Folks... I'm closing this thread, and have moved the other thread from Airheads to K bikes.