These tyre warmers from Sparco have an adjustable temperature setting up to 110 degrees C, when used with the appropriate controller. Analogue or pro digital versions are available. Both types offer individual tyre temperature control and the digital version also offers 3 pre-settable temperature levels and industrial thermoregulators.Brings tyres to race temperature so they provide optimum grip from the startAvailable in a range of sizes to suit F1, GT, DTM, Sports prototypes and rally carsAnalogue or digital versions availableThe Sparco adjustable temperature tyre warmers require the correct controller to operate them (analogue or digital). The inner of the tyre warmer features a polyester material with carbon fibre filaments. Insulation is provided by a non woven fabric to retain the heat in the tyre. Close fitting sides with Velcro fitment are supplied to prevent heat escaping. A carry bag is supplied for when the warmers are not in use.Sizes available:Size 1 (F1) - 270 (front) / 3