Which speedo gear should i use?

#1
You guys have helped me out before...i know if you have 31'' tires you should use 33 teeth...32'' tires you should use 32 teeth..what if you have 31 1/2 tall tires which one should i order my speed shows 4-5 miles slower than gps reads...so when i'm going 60 mph..im really going 65 mph on gps.....thank's for reading this post...
 
#4
Find out what tooth gear you have and you need one that is smaller in tooth count by 8.333%. Where ever that number falls on tooth count is the one you need. If that one is not available then pick the closest. Your preference as to if you want it to read slightly fast or slow.
 
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