18" Wheel Tire Size

[Catbox_95]

I just ordered some 18" wheels and need to know the tire size that would work best. My '95 Talon TSi is at stock height, but a future lowering may be in the works. Not much, just suttle. I heard of someone running 225/40-18. Would that work?

 

[Spidey]

What is the width of the wheels? I run 18x7.5 with 225/40/18.

 

[FORMONTOYA]

as stated above: 225/40/18 on 18 x 7.5-8.0 rims w/proper offset will work fine. you could 'slam' the car 2 1/2" on that setup if that is what you wanted to do (though i would definatly recomend camber kits).


jim

 

[UCSLugRacerX]

This is probably very obvious, but as you use bigger wheels, the sidewall height must become shorter. This way, the aspect ratio stays the same. 18 inches is a big wheel, and you might have to go shorter than a 40 series tire. Maybe a 35 series tire. Although, a higher width tire can be used to make up for the short sidewall, to keep the aspect ratio correct.

--------------------------------
Spidey, that's a f*king cool pic of your Gst, with the flames and all. (With the exception of the side skirt.) Is the pic CGI?

 

[FORMONTOYA]

18 inches is a big wheel, and you might have to go shorter than a 40 series tire. Maybe a 35 series tire.


225/40/18 is .8% difference in diameter than the stock 205/55/16 that came stock on a 2gb eclipse. you should be (as a rule of thumb) be no more than 3% different for speedo_gearing compatability.


jim

 

[Spidey]

Spidey, that's a f*king cool pic of your Gst, with the flames and all. (With the exception of the side skirt.) Is the pic CGI?

Yeah, it is Photoshop'd.

 

[Catbox_95]

Thanks for the input guys. I put 215/35-18's on them and they were just too damn low-pro. The overall diameter of my stock wheels and tires is 24.5 inches. With the 215/35-18's the overall diameter is 23.9 inches, and if I go with 225/40-18's the overall diameter will be 25.0 inches.

I have opted to go with the 225/40-18's, I think that will look and ride the best, especially since I do not plan to lower my car any. You say that they shouldn't rub with the "proper offset", but what is the proper offset? I just ordered 18" wheels for a '95 Eagle Talon TSi and they didn't ask me for any offset options. I guess this means they will work fine???

 

[FORMONTOYA]

I put 215/35-18's on them and they were just too damn low-pro.

agree, to harsh a ride, plus you run the risk of 'cratering' a rim.


I just ordered 18" wheels for a '95 Eagle Talon TSi and they didn't ask me for any offset options. I guess this means they will work fine???


if you ordered them for your car, they will work fine.


jim

 

[PaleDSM]

Stay with or very close to the stock overall rolling diamter when changing wheel/tire diameters. It is pretty easy math to determine what size would be correct.

 

[midnght]

http://www.miata.net/garage/tirecalc.html