Widest tires to fit on 8?
 

Hello,

I am a newbie here, I was wodering what the widest front and rear tires you could put on. I have a set of michellin pilot sports from my dad's m3, 275/30-19 and 225/40-19 front, will these fit?

Thanks,


Troy J.

NO, not since the RX-8 rims are 18 inches in width. The 19's won't fit on them.

Of couse... I was talking about possibly 19x8.5 and 19x10 or 10.5 rear wheels. Is this possible and will 275's fit in the rear?

thanks.


Troy J.

Bump. I've put 255s on successfully in the rear, but I haven't heard anyone going bigger....would be interesting to hear opinions from the "fitment pros" out there. TireRack doesn't offer any size options bigger than 245. <shrug>

--Landon

I have 275/35/18 Hoosiers on the stock 8" rims for autocross, and there is plenty of room. They are on all four wheels, and there is no rubbing, hitting, or interference of any kind (even at full lock in the front).

I think those rims and tires will fit fine on the car.

Hey tim, do you have some good up close photos of your 8 in autocross trim? I'd love to see how 275 looks. :)

I'd like to see that to..sounds like it would have a nice stance to it..

* I think he was asking about 275 on a 19" rim...I don't know about that...it all depends on the Rim + tire combo..offset, sidewall, width...275 seems kinda tight on a 19" you can't shrink less than 35 on the side wall because you're already at rim bending specs....I think a 275/35 would be asking for trouble...I think you'll scrub on the front...and you definitely would have to roll the fenders if you plan on dropping the car..

Remember tpryor was talking about Hoosiers and autocross. B-stock means stock wheel size (18x8) and Hoosiers are race slicks that have stiff sidewalls. So while he did say 275s fit on the stock wheel, that doesn't help for street tire size info.
________
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There are some pictures of the 275's at the link in the signature. I am going to take some more closeups at the next even (first weekend in March), so we can do some comparing between the "old" style Hoosiers and the "new" style Hoosiers. I'll let you know when they are posted.

Thanks tpryor, that would be great.

What brand and size do you run on the street, when your not running Hoosiers?

Well, thanks for the input guys... I am currently driving my 8 with the stock re040's in the snow! I got stuck in my driveway, but some of it has melted so I am okay for now. I keep prayin' that winter ends baby!
Anyway, I plan to either run 18x10 rear and 18x8.5 front wheels or 19" of those widths. I am going go get either Pilot Sport 2's or s-03's, I am a big fan of the Pzero Nero, but I have had it on 3 tire sets in a year and it is time to change up. I plan to get a borla exhaust, intake, and maybe a computer chip by the summer, and the 19s or 18s. This puppy will be ready to do battle with my buddy's 350z pretty soon.

Troy J.

Grey Tiptronic 8 with Touring

Any other size suggestions?

The only suggestion I have left is to not go and wider than 245 front and 285 rear.


Troy J.

Notice that tpryor is running the same size front and rear? The RX-8 handling is tuned for same size tires front/rear. If you go to staggered sizes, you WILL degrade the handling, introducing more understeer. That doesn't sound like much of an improvement! Some guys here are doing it, because they want the look more than they care about ruining the handling balance. It's definitely a trade-off to be aware of before you go that way.

Regards,
Gordon

You aren't really gonna notice the differance, unless a.) you drive like a batt out of H. on the streets, or b.) you track your car. Both of which I don't, well, maybee I do a little of a.) :D

Troy J.

wheels are one of the most important things on the car. and they also are prone to the most damage even if u try to take care of em.

u can baby an engine but wheels u can only hope u see that pothole when driving.. or dont slip out when u hit the black ice

if u find that it is recommeneded to stick with the same size tires... i would say do so. its a risky chance for the car to look a lil better.

my .02

Good point, Gord. As always. :D

I think I am going to go with 18's @ 9 & 10" wide. I was at the mall today and a Carrera 4s parked next to me, they have 18x8 and 18x10 285/30-18 rear and I dunno the front, maybee a 225. Just looking at the porsche's rear tires and then my rear tires, made my decision not to go to 19. I will hopefully find some wheels that are lighter than my stock, even at those wider widthsl; but 18s are the size for me. Oh yeah, the guy who drove the Carrera asked me if I wanted to race, I said, "naa, I have to break it in yet." More like, "no, you would kill me" LoL


Troy J.

After further pondering wheels, I have decided on a wheel. The BBS CH; 18" or 19". I am soooo torn with the rim size, but I now have a question on the width again. Does anybody on here know the absolute widest wheel that can be put on the front that won't rub? I am almost sure of getting 10's in the back, but if I can get 9.5's all around, then I may rethink my decision.


Troy J.

9.5 up front no good.Even a 9 is a little to aggresive up there.I went with 18x8 18x10 245 40 275 35 maybe a 285 im waiting on rims now to see how much fender will have to be rolled.I wouldnt go anymore then a 10,but contact Huff @ vivid.Guy has alot of knowledge and patience "which he needed with me"and good prices.

gord, you seem to be knowledgable on the subject matter. what size would you recommend?

well guys
i have 20x10 with 275/35/20 tires in the rear.

Kel you realize your really hurting your acceleration with that?The good side is your putting almost 7% less actual miles on your car.This is the main reason i didnt want to try to spin a 19 more less a 20.Have you noticed a difference?Your car looks sweet no doubt about it,but at what cost.

thankyou,i do not feel that the 8 has any acceleration
i mean its okay but no worth stating.im planing on getting another fd just for the power and keep the 8 for weekend crusing and showing.im not trying to squeeze any power out of the 8 or
worry about 20" being to big.matter of fact some people say are they 18-19 ?
all i have to say is i luv the way my car looks and the compliments
surpass my fd,which is crazy too me but....http://www.rx7club.com/forum/attachm...&postid=380478


p.s raced a blk 911 turbo last night in the s4 the 8 would of been murdered. i didnt beat him but doing some pulls and keeping up was nice.and he lives by me so we will get to play later;)

So no 20s for the FD:p If i get another ill swap out the wheels i just bought for the 7

lol no way
for the 20 i originally was searching for 19 i thought 20 would make the car look weird but there not that big looking.the rims are deep dished so it takes away from the rim size.
my brother is thinking of using my 8 wheels on his tII
but he thinks they look better on his 6.
wtf did u get the milanos ?pics

can you post some pics of your 8 on the dubs? I am curious of how it looks.


TRoy J.

I got 235/35/19 at the front and 265/30/19 at the back, no rubbing or anything

btw i am by far the worst person to take pictures.
its sad actually.lol

Kel i bought gramlight 57f pros from Huff at vivid.18x8 18x10. Should have em on by this weekend.I have b&b coming with springs brakes and all other kinds a shit.Ill post pics when i sort all the stuff out lol.

Kel Rx8 ....

Those look like 19s! I may even consider 20s for my 8, if I can get a light enough wheel. Looks great. My buddy with the 350Z thought my 8 had 17s on it, by the looks of the huge fender bulges. LoL

Troy J.

WTF no turbo
get some pixs for us and hows the money tree ? lol

Troy J.
yeah they dont look like they belong on a bling bling video(meaning drastically big)
they fit the wheel wells perfect in my eyes.so many people have said they are either 17,18,19

The LARGEST wheels and tires that work well with almost no compromises are:

19x8.5 (Front) Offset from 35-45 (Front) 235/35-19 Tires with 28-36psi
19x9.5 (Rear) Offset from 45-55 (Rear) 265/30-19 Tires with 32-42psi

You should run about 4-6psi more in the rear with a staggered setup...

RX8 does not accelerate!, (What are you talking about...) it is a very good car and has great performance... And with some tuning has a lot of potential; you must not be driving the same car as the rest of us...

Are these tire widths and sizes including any drop? Does anyone have some input of max. tire widths with TEIN springs and my wheels are two 19X8.5" and two 19X9.5 , 5X114.3 bolt pattern with a 38 mm offset for the front and 35 mm offset for the rear. Just wondering if what tire size will fit for sure with the TEIN springs.

Thanks and sorry for digging this up.

PS I think the RX-8 is an awsome car but really cant be compared to the 7.

Sub,

I have 275/35-18's on the back with +45mm offset wheels. I have very slight rubbing problems when I have the car full of stuff and people (basically dropped heavilly). I have not done any fender tucking. So with that in mind:

If you go 275/30-19's on the rear you will have to tuck your fenders some (about half an inch). The other thing is the tire WILL stick out a little from the wheel well. My combo is 100% completely flush with the body work. So this set-up will stick out 10mm for you.

I think 265/30-19 would work the best and won't stick out noticeable - you'll still need a little fender tucking but not much. Now, 255/35-19's (very unpopular size) would be completely flush with the body work, but you'll have a tough time finding them and the width is less impressive.

In short I would by Cortc's set-up - 235/35-19's front and 265/30-19's rear and be prepared to do some very mild fender work in the rear of the vehicle.

-Mr. Wigggles

the widest you can go on the rx8 stock rims is 295.. a lesson to all that dont know... you can always tell how big of a tire u can fit on a car depending on how wide the rim is.. a 9.5 rim like on the rx8. holds a max 295 tire.. that means if a 9.5 inch rim will fit so will a 295. and im pretty shure the widest you can go on the front is 265. i think the fronts are 8inch mabye 8.5 i cant remember at this moment.. this is more of an update post for this thread than anything else.

oh and for mr. wiggles. are you rubbing with 275's because your car is droped? with suppension mods. not just extra ppl weight..

295/30/18's im almost positive will if in rear. because ive had 285/30/18's

Either 295/35-17 or 295/30-18 fit without modification on 10.5" wheels that have the proper offset

edit: all four corners

I think..HOPE, Mr. Wiggles has figured out how wide he can go over the past 7 years

You information is incorrect. A 9.5 inch wide rim doesn't automatically mean it will fit a 295 mm tire just because they both have the numbers 9 and 5.
You also have to consider the aspect ratio of the tire (the 2 numbers in the middle). For instance a 225 45 16 tire has a wider contact patch than a 225 75 16 tire.
If I were to take your advice than is it safe to say that my wife's civic with 205 55 16s has a half inch wide wheel?

Not to mention HOLY ANCIENT THREAD REVIVAL!!! This topic has been more than covered already.

I'm running 275/30ZR/19 in the rear and 245/35ZR/19 in the front wrapped in Hankook Ventus Sport K104 tires on Falken Koblenz rims

Troy J. could be dead for all we know after 13 years! :angel:

On a side note I'm a contrarian, and wrapped my 7.5 x18 Enkei GF-1's in 215/40r18 Michelin PSS.

I can't get them loose on most street driving.

I ran those Ventus K104 tires for 6 years previous, and they were average traction for 2 years or so, and then, slick as glass and hard.