tire fitting
#2
Utopia Taco Bell
Yes, the 225/40/18s will fit your stock rims but your speedo will be reading higher than your actual speed because you have effectively reduced the diameter of your wheel.
http://www.paspeedo.com/calculator.htm for more info.
http://www.paspeedo.com/calculator.htm for more info.
#4
Resu Deretsiger
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#5
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+1 THE 245x40 are the best upgrade. Some have pushed it to 275X35, but with a few problems and more $$ why? Here is a site to help you with the size and how much it will change your speedometer. Put orig on left and change size on the right side. Then look at differences and then speed variance on bottom.
http://www.miata.net/garage/tirecalc.html
http://www.miata.net/garage/tirecalc.html
Last edited by Old Rotor; 07-19-2008 at 05:00 PM.
#7
I got 225/40-18 on my 8. Even with the Tein S springs the tires are just inside the fenders.
Why? A lighter tire and a little lower gear ratio cant hurt. I speedo is only off by 3mph(I drive by a posted speed trap every day).
Why? A lighter tire and a little lower gear ratio cant hurt. I speedo is only off by 3mph(I drive by a posted speed trap every day).
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