Tyres related items
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BMW tyre pressures chart
Technical GuidesBMW tyre pressures chart This chart should be used as a guideline only. Model Year-(MY) Torque (NM) Tyre Size Pressure Front (PSI) Pressure Rear (PSI) 1 Series (E81/82/87/88) 04 ...
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Bundorf analysis explained
Technical GuidesCar Bundorf analysis explained A Bundorf analysis is a way of describing the characteristics of a vehicle that govern its understeer balance. The understeer is measured in units ...
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Car Grumble Whirring Sound Repair
RegisteredTechnical GuidesCar Grumble Whirring Sound Repair Some road noise is normal but excessive road noise like a grumble or a whirring noise from the front or rear of the car can be a sign of a ...
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Circle of forces explained
RegisteredTechnical GuidesVehicle Circle of forces explained The circle of forces, traction circle, friction circle, or friction ellipse is a useful way to think about the dynamic interaction between a ...
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Contact patch (Tyre) explained
RegisteredTechnical GuidesCar Contact patch Tyre explained Contact patch is the portion of a vehicle's tire that is in actual contact with the road surface. It is most commonly used in the discussion of ...
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Cornering (Lateral) force explained
RegisteredTechnical GuidesCar Cornering (Lateral) force explained Tire tread element displacement and the resulting cornering force Cornering force or side force is the lateral (i.e. parallel to the road ...
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Drift tuning Setup
RegisteredTechnical GuidesCar Drift tuning Setup Explained Drive train A proper mechanical limited slip differential (LSD) is almost considered essential for drifting. Attempting to drift with an open or ...
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Lateral force variation
RegisteredTechnical GuidesLateral force variation explained Tires provide for steering, traction, braking, and load support by transmitting forces between the vehicle and the road. Lateral force variation ...
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Porsche Wheel and Tyre Sizes Guide
RegisteredTechnical GuidesPorsche Wheel and Tyre Sizes Guide car type front/front&rear rear only size offset tyre size offset tyre 968 17x7.5 50 225/45R17 17x9 47 245/40R17 18x8.5 40 225/40R18 18x10.5 60 ...
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Radial tyres
RegisteredTechnical GuidesRadial tyre (tire) Explained A radial tire (more properly, a radial-ply tire) is a particular design of vehicular tire (in British English, tyre). In this design, the cord plies ...
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Run-flat tyres
RegisteredTechnical GuidesRun-flat tyres A run-flat tire is a pneumatic vehicle tire that is designed to resist the effects of deflation when punctured, and to enable the vehicle to continue to be driven ...
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Schrader valve
RegisteredTechnical GuidesCar Tyre Schrader valve Explained The Schrader valve (also called American valve)is a brand of pneumatic tyre valve used on virtually every motor vehicle in the world today. The ...
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Self aligning torque
Technical GuidesCar Self aligning torque explained Self aligning torque, also known as aligning torque, SAT, or Mz, is the torque that a tire creates as it rolls along, which tends to steer it, ...
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Skid resistance Road slipperiness
RegisteredTechnical GuidesCar Skid resistance Road slipperiness explained Road slipperiness or skid resistance is the technical term for the cumulative effects of snow, ice, water, loose material and the ...
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Snow chains
RegisteredTechnical GuidesSnow chains Snow chains, or tire chains, are devices fitted to the tires of vehicles to provide maximum traction when driving through snow and ice. Snow chains are attached to ...
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Tyre (tire) History
RegisteredTechnical GuidesAutomotive tyre (tire) History History The earliest tires were bands of iron (later steel), placed on wooden wheels, used on carts and wagons. The tire would be heated in a forge ...
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Tyre (tire) Terms & Specifications
RegisteredTechnical GuidesCar Tyre (tire) Terms & Specifications Explained Vintage Car cross ply tyres Tire pressure monitoring system Tire pressure monitoring systems (TPMS) are electronic systems that ...
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Tyre Components
RegisteredTechnical GuidesCar Tyre (Tire) Components Explained A tire carcass is composed of several parts. Tread The tread is the part of the tire that comes in contact with the road surface. The portion ...
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