Vortex Digital tire warmers

TW101 Works on:  Front Wheels 16.5-17″ Diameter, 3.5-4.0 Rim Width, 120-125 Tire Width Rear Wheels 16.5-17″ Diameter, 5.5-6.25 Rim Width, 180-200 Tire Width  TW102 Works on: Front Wheels 16.5-17″ Diameter, 3.5-4.0 Rim Width, 120-125 Tire Width Rear Wheels 16.5-17″ Diameter, 4.0-5.5 Rim Width, 140-165 Tire Width           NOTE :Min power source of 1100 watts suggested Carbon insulation = Better heat retention Dual Stage Neon Light = Shows when heating & ready Bungee Cord fitment system = Ensures good fit, easier to install Dual Temperature Setting =  Simple adjustability/Positive Temp Control Evenly spaced heating element = Full coverage heating Creep action thermostat Silicone insulated 7 core heating element Felted Carbon Insulation Urethane backed ballistic nylon exterior