Skidplate
New Member
I'm not sure if it belongs here (maybe in the how to section) but this little calculator has helped me size tires out and the differences between them. It will also show the differences in speeds. If you put in a base speed it will show how much faster or slower the speedo is reading. Just plug your info in the first set of boxes and hit compare. Check it out http://www.csgnetwork.com/tireinfo4calc.html