The mtb one tubular 275 inch tyre from challenge features a special mud free large tread pattern that has been designed to grip in the worst mud and stand fast and agile at the same time as with all challenge tyres this tyre has been hand crafted to ensure the highest quality and best performance the casing is made using the latest technologies allowing tyres to be strong and supple and still keep the weight down the tread is slowly hand glued to a rim mounted inflated casing to make sure