The tyre size/quantity guide on our websites are based on ‘normal road speeds’ and use. However our guide can be adjusted to cater for specific customer requirements. This includes both slower off road use, and high speed track use. We work with customers who ‘road race’ and are frequently on track. The key point at speed, is the quantity of product inserted within the tyre (too much product, and yes, we can upset balancing). As Bike-Seal/Auto-Seal is so effective, less product volume is required to be used. Largely, it is for this reason that allows for higher speed usage and does not upset the balancing of a pre-balanced wheel/tyre. For bespoke requirements about vehicle use and/or speed, please feel free to discuss direct.