I think our bikes have a balance issue. I've had a Speedy and now an america and both bikes rear kicks out to the right if the.rear tire is locked while braking hard. Slow crawl riding can be affected by a lot of factors. Some times I have no problems then the road surface changes and I'm all over the lane. Maybe adjusting the rear tire could affect it. Center of gravity? Anyone whose lowered their bike have any comment?
