paintman Posted June 19, 2006 Share Posted June 19, 2006 I have a '00 1100RT and I am new to BMW's. The bike has 14,000 miles (I have put on 700) and I just had the 12,000 mile work up done because I had no records from previous owner. I rode it sort of hard for the first time this weekend getting a agressive in the turns. When I did I got a wobble almost like a washboard surface but only in the rear end. I checked and the wheel isn't loose and I couldn't find anything obvious wrong. The rear suspension adjustment is set right at the dot. The tires are in good shape and as long as I ride casual there is no indication of a problem. Any ideas? Link to comment
David Posted June 19, 2006 Share Posted June 19, 2006 Put it on the center stand and see if the rear is out of round when run at idle in 3rd gear. An out of round condition in a rear tire will show up particularly well under power when leaned over. Link to comment
Jerry Johnston Posted June 19, 2006 Share Posted June 19, 2006 Mine kind of felt that way when the rear shock got tired. Link to comment
John in NC Posted June 19, 2006 Share Posted June 19, 2006 My bet would be the tires. If there is a noticeable flat spot then what you may be feeling is the transition over the ridge. My does that too. It's a squirmy feeling and very unsettling Link to comment
Mark K Posted June 19, 2006 Share Posted June 19, 2006 Could be a ding in the wheel that isn't noticed until you get some serious lean angle. As the previous poster mentioned, this can be checked while idling in a higher gear on the center stand. Do you remember if the washboard feeling was more pronounced on one side or the other? Link to comment
DEF Posted June 19, 2006 Share Posted June 19, 2006 I have a '00 1100RT and I am new to BMW's. The bike has 14,000 miles (I have put on 700) and I just had the 12,000 mile work up done because I had no records from previous owner. I rode it sort of hard for the first time this weekend getting a agressive in the turns. When I did I got a wobble almost like a washboard surface but only in the rear end. I checked and the wheel isn't loose and I couldn't find anything obvious wrong. The rear suspension adjustment is set right at the dot. The tires are in good shape and as long as I ride casual there is no indication of a problem. Any ideas? Check for lash at the rear Paralever bearing stubs as well as a loose crown wheel bearing. Either will produce some rear end squirm. On center stand, grab the wheel at the 12:00 and 6:00 position and attempt to rock the wheel back and forth across the lateral axis. Now, perform the same thing at 9:00 and 3:00. Any perceptible lash is undesirable. If either is detected, you’ll need to do some wrenching. Keep us posted. Link to comment
4wheeldog Posted June 19, 2006 Share Posted June 19, 2006 A six or seven year old bike with 14k, I am betting that the rear tire is over aged. Check the other stuff, but mechanical causes are unlikely with this low mileage. Any tire four years old is past its prime. Change them both, you will feel much more confident. JMHO. Good Luck! Link to comment
paintman Posted June 22, 2006 Author Share Posted June 22, 2006 Thanks to all. There is a bit of a flat spot on the tire that could be part of the problem. All other mechanical suggestions are negative. A friend who once had a shaft drive bike suggested I might not have the RPMs high enough in the turns. He said that could cause some rear wobble. I've tried staying in a lower gear and haven't felt the wobble again. Link to comment
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