BT45 Bias Ply Sports Touring Battlax BT-45 is a sports touring bias ply tyre offered in both H and V rating. Battleaxe BT-45 gives all-round street performance, with the emphasis on riding comfort, long mileage, wet performance, all designed by the latest tire developing technologies of Bridgestone. Because of the technology incorporated in these tyres they outperform the low tech bias ply tyres offered by most other manufacturers. These tyres work well on bikes which use bias ply tyres. Good all-round sports touring performance. These tyres are available in a large number of sizes and profiles. Because of their outstanding performance the BT45 is widely used in Historic racing.