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Author Rolling Radius
Cosmo
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Registered: 29th Mar 01
Location: Im the real one!
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30th May 03 at 10:48   View User's Profile U2U Member Reply With Quote
Anyone tell me how to work this out??

Thanks
3CorsaMeal
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Registered: 11th Apr 02
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30th May 03 at 10:53   View User's Profile U2U Member Reply With Quote
circumfence of a circle
3CorsaMeal
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30th May 03 at 10:54   View User's Profile U2U Member Reply With Quote
3.14 x the diameter
blebo
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Registered: 18th Apr 02
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30th May 03 at 10:54   View User's Profile U2U Member Reply With Quote
Need to now the tyre size then do 3.141 x diameter
Cosmo
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Registered: 29th Mar 01
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30th May 03 at 10:54   View User's Profile U2U Member Reply With Quote
so if I had tyres of 255/45/20 what would it be
blebo
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30th May 03 at 10:56   View User's Profile U2U Member Reply With Quote
75 inches I think
Cosmo
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Registered: 29th Mar 01
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30th May 03 at 10:57   View User's Profile U2U Member Reply With Quote
that seems too big!!
blebo
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30th May 03 at 10:59   View User's Profile U2U Member Reply With Quote
20 inch wheels plus 2 x 45 mm each side for the tyre wall = 23 inches

23 * 3.141 = 72.243
3CorsaMeal
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30th May 03 at 11:02   View User's Profile U2U Member Reply With Quote
45 isn't mm, its a percentage of the width

so start with 255/100 * 45
then add that to the 20" of wheel. and multiply by 3.14
Cosmo
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Registered: 29th Mar 01
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30th May 03 at 11:02   View User's Profile U2U Member Reply With Quote
so thats 1904mm, but from what I've got here

a 205/55x15 has 607mm and
a 215/40/17 has 606mm

 
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