Tyre Load and Speed Markings It is important that tyres are suitable for the maximum speed capability of the scooter or motorcycle. Tyre speeds are shown in accordance with an alphabetical list of symbols indicating speeds at 10km/h increments in the chart below. The relevant speed symbol is positioned near the size designation in conjunction with a load index: e.g. 120/90-18 65S, where ‘65’ is the load index and ‘S’ the speed symbol. In the case of speed symbols ‘V’ and ‘ZR’, these are shown within the size designation, e.g. 120/90 V18. |Enjoying the same heating element design and insulation as the standard warmers, Bike TekProfessional Digital warmers use a digital display micro-processor temperature controlleroffering adjustable heating. Depending on weather conditions, the greater control of theprofessional warmers allows precise heating through a range from 40-99 ºC, with the benefit ofreal time temperature readouts. The temperature controller is located in a central module, soboth front and rear warmers can be controlled and viewed simultaneously.| - Fits/Covers the following: PERFORMANCE