I just bought me some new wheels, 18x7.5 and i need to know a good tire size to go by so that i can keep my mileage and speed the same. right now i have factory 205/40 tires on 16 inch rims, so any suggestions on what to put on 18's to keep everything the same?

 

i fit 215's on my car but you need to shave a little off in the back.

 

stupid question but what do you mean by shave a little off in the back?

 

I just noticed i put in the wrong size it has 205/50 not 40. It is still 16"wheels. 215/35 should still work though right?

 

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

225/35/18 is .1" larger than stock diameter...

 

Yeah that's what I have. 225/35 fits good. Although there isn't a wide range of selection for tires in that size. What offset did you get on the rims???

 

225/35 is what i have

 

I'm also running 225/35. If you have a 42+ offset that is your best choice for a 4gen. 215/35 is an insanely small sidewall. I went with Falken FK451s.

 

the back tires rub a little with 215's. there is a piece of plastic that sticks out behind the back rear wheel fenders that has to be shaved off. otherwise 215's fit perfectly

 

sell them

and pick up some 225/45/16s

 

but 18's R s0 bLiN6, y0!

j/p

i won't front, i have a set of 17's for cruisin around town...though i wish i got 16's instead...

 

225/40/18

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by silver97prelude &raquo;</TD></TR><TR><TD CLASS="quote">225/40/18 </TD></TR></TABLE>

That is too big. It's almost 1" bigger than the stock 205/50/16. The OD of 225/35/18 is closer to stock than 215/35/18. 225/35/18 Falken FK-451 was what I had when I had the 18" wheels.

 

how do u like the FK451? Are they more grippy than A520?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vwong &raquo;</TD></TR><TR><TD CLASS="quote">

That is too big. It's almost 1" bigger than the stock 205/50/16. The OD of 225/35/18 is closer to stock than 215/35/18. 225/35/18 Falken FK-451 was what I had when I had the 18" wheels.
</TD></TR></TABLE>

it works for me

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by silver97prelude &raquo;</TD></TR><TR><TD CLASS="quote">

it works for me</TD></TR></TABLE>

Oh, I'm not saying that it won't work. I'm just saying that it's too big. I know 225/40/18 would work 'cuz that was what I had on my first set of 18" tires. But then I went with 225/35/18 on my 2nd set of 18" tires.

 

I was gonna go with the 35s but i figured it made it easier to bend the rims,
Ive bent one anyway with the 40s. They rubbed at first but I just shaved some of the wheel well with a dremel. Im sure my speaker box is whats weighing it down, that and a full tank of gas.

damn a tsx, nice.