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Discussion Starter · #1 ·
Tried a search and couldn't find what I was looking for, So...
I know this is a dumb question, but what is the diameter of a 33x12.50 tire. I am using an RPM calculator and I need this diameter to get an answer. Thanks for any help.

Nick
 

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111 Posts
Discussion Starter · #3 ·
I think I need the true diameter...or do I? Maybe I am confused. Any one know if this calculator needs the "true diameter" or will entering "33" in the tire diameter box give me the desired answer? Here is a link to the calculator:

http://www.quiknet.com/~ke6vut/rpmcalc.html

Thanks
 
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