im gettin 18 enkei rpo7...what size tire should i get???225/40/18???

 

235/40/18 is the correct size, i just put 18x7.5's on my car

 

235/40/18...and watchout fot them potholes!
good choice on the Enkeis btw

 

Just order 18" Giovanna Essen ( for Show) I recommend 235/40/18 as well. Leave the 225/40/18 alone.

 

235/40/18

 

Hey maxxxed out, check out this link,
http://www.miata.net/garage/tirecalc.html

You can see which size will be near original and by how much it will throw your speedometer off.

I believe in 18" the size which is nearer original 17" is 245-40-18 but for this size you need a wheel that is at least 7.5" or 8 " wide preferably.

Hope it help.

Cheers

AA

 

whats wrong with 225/40/18??? i can get them for cheap too. there yokohama paradas...i like them cause they look real low profile.

 

Hi maxxxed out, here is the math.
Tire Size Comparison

Specification Sidewall Radius Diameter Circumference Revs/Mile Difference

225/50-17 4.4in 12.9in 25.9in 81.2in 780 0.0%

225/40-18 3.5in 12.5in 25.1in 78.8in 804 -3.0%

Cheers

AA

 

245-35 wide tire low profile, 235-40 mid size wide- mid profile, 245-45 wide tire tal profile, take your choice.

 

im gonna go with what u guys say is best...thanx