im getting some 18x7.5 5zigen rims.. and im going to pick up some yokohoma parada spec 2s.... now im pretty sure the correct size, since im going for 225s would be 225-40R18.. but im not sure if i need a 30 or 35 sidewall... im 90% sure im right.. but.. making sure

i've got some 18x7's
i use a 225 40 18
lates
james

I have 18x7" Enkei's with 225/40/18 Parada spec 2's. With the 7.5" wide wheel you'll probably want something like 245 or 255 and either 35 or 40. Call discount tire... that's what I did, and they have good prices on tires.

No....225/40/18 is the right size.

Here's 5ZIGEN Inperio S-O8 18"x7.5 with 43 Offset
and 225/40/18 PARADA TIRES. All fit perfectly.
I'm not sure about the correct size........



2GUFO :)

I've checked at http://www.tirerack.com
and it shows, if you have original 205/55/16,
the correct size for 18" and 225 will be 40 (225/40/18).

Correct me if I'm wrong. :)

2GUFO

That is the correct size. 30 or 35 series tires are a little too thin for daily driving! More then likely will dent one of your rims with those! I have 225/40/18. Good luck!

225/40-18 is proper. 30 series would be 205/30 that's a rediculous size and would definetly dent a rim. 225 40 is fine.