speedo
#2
Go to this site:
http://www.rimsntires.com/rt_specs.jsp?postId=906
Enter factory specs (I don't remember them exactly anymore, but I'm sure someone will jump in and correct me if I'm wrong)
wheel is 16 x 6.5, tire is 215/45 r16
Now enter your new wheel size, and your new tire size. It will tell you how much your speedo is off. Now you can try smaller tire sizes and see which one will give you a more accurate reading.
http://www.rimsntires.com/rt_specs.jsp?postId=906
Enter factory specs (I don't remember them exactly anymore, but I'm sure someone will jump in and correct me if I'm wrong)
wheel is 16 x 6.5, tire is 215/45 r16
Now enter your new wheel size, and your new tire size. It will tell you how much your speedo is off. Now you can try smaller tire sizes and see which one will give you a more accurate reading.
#4
#7
Your almost dead on when your speedo reads 60 mph your doing 61.4 so it is about the same. http://www.miata.net/garage/tirecalc.html this is what i used and i used it for mine to and check it with my gps and mine is 3 mph off just like the calculator said.
#9
#10
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