HELP ON TIRE SIZE..., For 17's and 18's rims Options

[charming6gmoz]

I need help in getting the right fit of tires for the current rims I have.



A few days ago one of my front rims crack really bad in pieces going into a pot hole.

Right now my tires are 215/ 35 /18




I Want to increase the sidewall height to decrease the stiffness in my car
and wanted to know what is the highest height I can go
on the sidewall height for 18 inch rims and for 17 inch rims... ??????

The reason I want to know what is the highest I can go for 17's and 18's
is that the Company that make the rims I currently have doesn't make 18's anymore
and I have to place 17 inch rims in the front, but now I want to go the highest on the sidewall height..


Some people recommended me getting
215/ 50/ 17 for the front &
215/ 40/ 18 for the rear.

After i got my rims, the car became very stiff and
that is why I want to get bigger tires now so the impact
on the road won't feel as hard and the car can decrease the stiffness.

Is this the highest I can go on the tire size so none of the tires rub?
i would really appreciate your help..







This post has been edited by charming6gmoz: May 19, 2010 - 6:39 PM

[k-weaver]

I think Tom is right on the money. For example, i'm running (just ran out to the car to double check as I think in another post I posted my wrong size >.<) a 225/40/18. If you run a 215/40/18 our sidewalls will NOT be exactly the same height because there is a relation between the tire width and sidewall height.

With my size tires/rims i've never once rubbed on anything and my car is lowered. It does "look" like it comes close however it never has nor probably ever will rub. That being said, I think you'd be fine with a 215/45/17 size tire.

I think a 35 is way too small. Keep in mind that this will cause your speedo to be off. May not be much, may be alot. Either way, it will not be exact. Worst case scenario, go to a reputable tire shop and ask what they recommend.