The fishtail from the downshift is because you're probably not blipping the throttle. Happens when all you do is roll off the throttle, pull the clutch in, downshift, release the clutch, and open the throttle again. It'll happen everytime unless you accustom yourself to good downshifting techniques. There's another thread on downshifting in one of the sections.
180 degree turn? like a u-turn or something crazier? I couldn't tell you why the backend does that past 70mph.
As for the tire, places that patch your tire make you sign a waiver because it's damn dangerous. I know it'll cost money, but get a new tire. Don't skimp out on stuff like that.
180 degree turn? like a u-turn or something crazier? I couldn't tell you why the backend does that past 70mph.
As for the tire, places that patch your tire make you sign a waiver because it's damn dangerous. I know it'll cost money, but get a new tire. Don't skimp out on stuff like that.