I'm currently running with wheels that have the exact same specs as yours - i just feel that if i were to go beyond 245/40 it'll be crossing into the impractical.

I have considered going with a smaller sidewall though.

besides ride comfort, any down side to running 35 sidewall? lowers the car an inch!

you think 255/35 is freakish? haha

255/35 isn't too freakish, i just think it's a little impractical. That's just me though.


p.s. tire profiles are measured by milimeters not inches ;)

yeah i know, but if you compare overall diameters b/w 245/40/18 and 255/35/18 there is a difference of an inch

I've switched from 235/35 KDW's and didn't notice a ride height difference?

As far as ride comfort - i felt nothing. Supposedly the turning is more crisp with a smaller side wall but i never had the chance to analyze it :icon_no2:

hey atilla, i'm headed to irvine in 6 weeks....will be there for one year. Seems like you're from around there....which dealer do you use?

do you know anyone on this forum who roles with 255/35 or 40/ 18s?

thanks for your input

^whatever you do, DO NOT go to HB mazda

orly? That's cool! maybe you can catch some of our car meets :cool: You might wanna attend Sevenstock (THE Biggest rotary meet in the nation) :D:

and unfortunately no - I know a good amount of the members in socal and i don't know of any that are running that profile. :dunno:

p.s. - Tustin Mazda is legit - there's only one bad apple there but i forgot his name. They also sell mazdaspeed stuff there as well as some racing beat items.

Alright, BBS RX's 17"x9" +28 offset, stock susp. for now; 1" or so drop in a few weeks. I need to know the biggest (Widest and thickest) rubber I can fit on these without rolling. 245/45? 255/40? I need help please!

For clarification, I'm sure its been mentioned but use this site to get an idea of ride heights. Profiles of tires are not straight comparisons, its an algorithm involving width as well as wheel diameter/outer diameter.

http://www.1010tires.com/tiresizecalculator.asp

Also, use this site to help get an idea of what will or won't fit. Though it may just be easier to post in here and let someone else do the work, you really can figure it out yourself; all you have to do is enter in your current wheel specs as well as desired wheel specs (offset + width) and take into consideration how far your tires stick out (How tall are they? How wide are they? Does the tire pass the lip of the wheel or is it slightly stretched inward?). Keep in mind suspension load as well (if I am at full lock turning and cornering hard, will my front right/left dip down far enough to hit?). Use the osset calculator, see how much farther in or out they stick, then bring a ruler or measuring tape out and check for yourself!

http://www.1010tires.com/WheelOffsetCalculator.asp

I may not be atilla but, I may be able to help;

What width wheel are you planning to run these tires on? Are you lowered/how low?

I've currently got 255/40's on 9.5's and they sit very square, almost to the equivilant of 275/35/18's. If you were to drop to a 255/35 the tire would be considerably shorter (about an inch shorter) throwing your speedo 3.66% off. Your RPMs will sit that much higher, this isn't necessarily a bad thing but could potentially decrease your highway mpg (ever so slightly). Some tire shops (Cosco is the only one I can think of) won't even sell you this size, if they know what car its going on.

I personally hated the 255/40's, I am quite low (tucking a bit of tire) and these tires gave me clearance problems (they're actually .24% larger than stock 225/45/18's).

If you can elaborate more on your question (wheel width/offset, how low you are, etc) we can help you out a bit more.

-Matt

what are the chances of 20x8.5 +40 with 255/35/20 all around im lowered on swift springs .8 on sport suspension and running -1.3 camber front and -2 rear i can get a crazy deal on them and use my stockers for track

Alright, I think I found my wheels, but I just want to double check one more time before I ordered.

19x8.5 with 40 offset Front or 30 offset (which should I get?)
19x9.5 with 40 offset Rear

I want 245-?-19's in front and 275-?-19's in the back.
Will it fit? I also have TEIN S-tech lowering springs on the way. What size tire should I use where I have the question marks?

30 would look better.

YEah, it'll fit. The sidewall depends on you /35 or /30 would be good.

You should be fine, might have a slight rub.

245/35/19 + 275/30/19 will fit with minor rubbing (suggested fender rolling). Definitely recommend the +30 as the 8.5 width will clear easily

Looking at 18X9 +32. Am I going to need a roll? I'm dropped on Tanabe GF's.

And what will be a good size tire to run? 245/40?

^You will be fine with 245's without a roll as long as you have some negative camber. What wheels are you looking to get? Wedsport SA-70?

Hehe yup. Thanks

I already have the tires, they are 255/40/18s.

I'm looking at a set of the Enkei RS+M wheels... 18x8.5 +35.

Would those wheels with those tires fit in all four corners on a stock suspension? I bought the tires before hand since I was stupidly worried about keeping the speedometer right and the tires aren't made in a 225/45 size.

I want to avoid negative camber but fender rolling wouldn't be an issue.

i have oz's in 18x8 +48 offset. what size spacers do i need to have them sit flush?

Yes they should be no problem.

I know a 25mm spacer makes the stock wheels look ok, so I think that would be a good bet. Not totally flush but much closer. Should sit like a 9.5 +42 if you can find pictures (A. Mair has RP03 in that offset).

Great! i was looking to go 25mm anyways. Thanks man

19x9,5 ET35
 

Will 19x9,5 ET35 fit in the rear?
I have rolled my rear fenders

Im looking to get the Enkei nt03 with some direzzas

18x9.5 +40 with 245/40/18

how will they fit? currently stock but im planning to get some stance coilovers in the future...