Hi, I put it in the front tyre of a Trials Bike so not that fast, and it was awefull,

I had to replace the tube straight away, as said, it throws the ballance out, and you are unable to adjust the pressure because it seals the valve,

so it does work

I just carry a can of repair spray to get me home. If your bike is tubeless then there are several good repair options from places like M&P and Busters

Hope this helps Mike