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Old 05-06-2003, 03:28 AM   #12 (permalink)
clonmult
Crazy
 
Location: Wherever I lay my hind quarters
Idiots - the speedo will effectively be reading wrong with bigger tyres.

The speedo calibration is based on the circumference of the tyres - bigger tyres go further for each revolution.

Therefore, with a slightly bigger tyre (say 5% bigger), with the speedo registering 50 mph, you'll actually be doing 52.5 mph. Which isn't a big difference, but I know that some of the police forces (farces?) in the UK will nail you for speeding with that sort of difference .... and possibly do you for driving with a car thats dangerous/not legal/something else.

DEI37 - thanks about the 75 being the percentage, I was 99% certain of that.
clonmult is offline  
 

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