Are New Tyres Faster Than Old Tyres?

Matthew Johnson, Devpreet Surae, George Watson

Abstract


The lowest legal depth of a tyres tread is 1.6 millimetres. When thinking about a worn tyre with the legal tread limit the circumference is 0.034 metres less than a brand new tyre. Over the distance of which a car with new tyres travels at 30 miles per hour this difference in circumference equates to the car travelling approximately 0.511 miles per hour slower.


Keywords


Physics; Mechanics; Material properties; Cars

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References


Theaa.com. (2012). Law about car tyres | AA. [online] Available at: http://www.theaa.com/motoring_advice/legal-advice/tyres.html [Accessed 10/03/2016].

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Halfords Advice Centre. (2016). Tread Depth and Safety. [online] Available at: http://www.halfordsautocentres.com/advice/tyres-advice/tread-depth-and-safety [Accessed 10/03/2016].

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