This is for all that has a manual tranny. Sometimes when i peel out or launch and the wheels are spinning, the car starts "jumping" really fast and the whole interior feels like its falling apart. Some other times when i launch or peel out, its completely smooth and normal. I refer to this as "wheel hopping" and i was just wondering if its normal on other cars. It seems like when i drop the clutch, the wheel hops are more severe than when i just slip the clutch. Anyone on this topic? Thanks.