I had a shudder at 60mph......... It's a "BIG" NO NO to take the hands off the bars at that speed.. Any how, mean while back to this post.. My dealer told me that they have seen some metz. front tires with this condition before..I could see the tire itself wobble and the rim was fine.... New tire.. Good to go... Good luck, and it's better to have it at slow speed. V.