This is just a statement of fact, I am not trying to sway opinions in any way. Please make your own decisions. I have used Punctursafe for over 70,000 miles in about 7 years. I have only had a flat tyre once where a piece of metal went through the side wall (which tyre sealant don't pretend to prevent). My wheels are still in excellent condition. Some bikes front tyres are more sensitive than others with regard to balance. My BMW K1200GT was unaffected by the amount of sealant. MY Yamaha FJR front tyre is sensitive to the amount of sealant used, once you find the right amount the balance is unaffected by speed.