Posted 06 January 2013 - 09:33 PM
My current tyre size is 205 55 R16
Posted 06 January 2013 - 09:45 PM
Posted 06 January 2013 - 09:55 PM
Posted 07 January 2013 - 12:59 AM
There's plenty of websites that do all the maths for you, you just type in your tyre sizes and it tells you how the two compare.
You want a variance as low as possible - less than 2% is what you should be aiming for. Any more than that and your speedo will be very wrong!
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