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Tire size and autocross / track >>>>
Posted by BobD (more from BobD) on Tue, 13 May 2003 17:06:39
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I am autocrossing my '76 EMS. I have found a set-up of 15 x 6.5 wheels and used 225-50 Hoosier track tires that seem that they will work on the car. This will give me same rolling diameter as 195-60. The more logical and available tire size is 205-50. Any thoughts on the n-th degree in autocross >> Is the 225 overtiring the car to no real advantage? Is the minor gear ratio change of the 205-50 an advantage? Last auto-X the course was such that 5-6000 rpm in 1st seemed to give me best advantage thru the first two sets [ running 195-60 AVS-Int. ] - gearing change would probably necessitate 1-2 shift.
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