Saturday, 26 November 2011

Wheels and Tyres

** Check tyre (tire) tread depth, the deepest groove in a tyre has a tread depth indicator which is a small hump in the groove, the side of a tyre also has an arrow or small triangle which shows where the tread depth indicators are located

** Most tyres start with either 10/32" or 11/32" of an inch of tread. When the tread depth indicator is level with the height of the tread (2/32"), this means it is time to change tyres. The usable amount of tyre is on most instances 8 to 9/32"

** When tyres are fitted to wheels, wheel weights are fitted to a wheel to help balance the wheel/tyre combo and to remove vibrations when driving, the less weight  fitted the better the build quality of the tyre and/or wheel in general. If many wheel weights are added, it means the build quality of the tyre or wheel may be poor

** When putting a wheel back onto the car, it is best to tighten the wheel nuts by hand, DO NOT over-tighten wheel or lock nuts, tighten until the nut is firm, you can use a torque wrench to tighten to factory settings if you are unsure how to go by feel

** Monitor tyre wear once a month, any uneven wear means the tyre may not be inflated correctly or a wheel alignment may be required

** Check brake pad condition if removing a wheel, saves checking again later

** Pump tyres to around 36-38psi cold. Tyres heat up when driving which will cause tyre pressures to increase, I like to pump tyres with slightly higher pressures to make the car easier to steer, to extend the life of the tyre and to reduce the likelihood of damaging the wheel when driving on poor road surfaces

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