Recently installed Metzler Tourances on a '03 Strom. When slowing down using the engine there seems to be a slight wiggle (bars dance about 1/2 inch back and forth) from 40 -35 mph. Other than that seem to be a decent tire. They are not to fond of rain grooves though. Any ideas about the problem? Might have to try the new Conti's if the problem persists. Thx.