Changing from one type of racing to another can be a pain.
Case in point I was tring to use circle track methods to figure out the final drive ratio needed for drag racing.
Wroung I forgot that I'm shifting gears there by changing the multiplier.
Numbers so that I can remember
second gear 2.14X3.44=7.36 final.
7,920 inches in a 1/8 mile
The 205/60/13 tire is 72 inches in circ. with a dia. of 22.4
Thinking about a 24.4 dia.tire.

wrench459