JMP tire holder - Rubberized body - Orange anodized mother - Specially shaped and anodized washer - Rim width: 1.40 / 1.60 inches - Tires: 2,50 / 3,00 In terrain, low tire pressures are used to improve traction on difficult subsoils. The low tire pressures often lead to a slipping tire and torn-off valves. The JMP tire holders prevent this from slipping .