Tire question for Xcal 2

[covertaxn]

I have an xcal 2 and I think the speedo is reading fast over 50 mph. I did the end user adjustment to ensure the gear ratio is correct; what I don't know is the revolutions per mile for the stock tires. i was expecting to be able to just set the tire size. Anyone know what the of revs/mile for the stock 235/55 17 tires is?

Thanks,

Keith

 

[99svtlightning]

Useful Link:

http://www.gordon-glasgow.org/tirecalc.html

 

[Fourth Horseman]

Useful Link:

http://www.gordon-glasgow.org/tirecalc.html

That is a very useful link. Thank you for posting it, I've been looking for something easy like this for a long time.

 

[covertaxn]

Pirelli claims 768; the calculator says 742.