uneven

Hello everyone, first post on UHE. I own an 05 Fe 501 which had a new rim and tire fitted last summer. When riding the bike on tarmac I get a bouncy undulating cyclic movement through the forks. I guess this is an issue either with the rim or tire. However I wondered if there may be other...

hi still having problems with my 02 fe501s ... the valves have just been adjusted. but when riding and holding an even speed and rpm, the engine is not running ideal! hard to explain, but its like "crotcheting", running uneven and making it very unplesant to ride... any ideas...