First time poster
 

What kind of set up if any could I run with WORK Varianza T1S (MSP)
19x10.0 +35. Has anyone run something this big without major work.

Does this fit
 

Rotiform Wheels R112 BLQ BD -Black Matte 18x8.5 5x4.5 45 offset 72.6 hub or could I possibly go wider to maybe 9.5 all around?

I just went through this, 9.5 works pretty easy, roll fenders, +30 offset or go +38 to be on the safer side, I went +30 and am happy with the look, but do see how +38 fit a lot easier, people have pulled off +22 running camber with a roll, but too aggressive for me.

Album 18x9.5 +22 https://imgur.com/a/bqXiz

What size tires do you have on your 9.5?

245/40r18

Does 235/50/18 fit on a stock rx8 wheels?

Car is not lowered. This is winter set that my friend wants to give me. He's moving away. Overall height is more than stock size. Will probably look jacked up. But since it's free.... would hate to have rubbing issues though.

On stock wheels 18x8 +50, fuck no it will not rub.

I have this size and it rubs jusy slightly (can see fender bent at some point)

Im looking for what size i should go.

Need as wide as possible. 275/40 17 285 40 17. Rear only... 43.5 offset work with 9.5? 9 or 10 is possible too.. Id like to go wider. Is that at all possiblw on tire size for rear? Do i nwed higher offset or will inner rub? Trying to get as close to inner as possible and no roll outer...

Thanks!

Hey Guys,

I am new to the RX8 forums and did some searching before I decided to post. I couldnt find anything specific to my wheel size/offset combination, so I'm asking for a little help from yall.

Im looking at a couple of wheel options and am confused - need to know will it fit with no modification (i.e. rolling/pulling etc...)

18x9.5 +20mm F+R w/ 255/40/18
19x9 +25mm F / 19x10 +25mm R (need tire size recommendation)
19x9.5 +38mm F / 19x10.5 +32mm R (need tire size recommendation

Basically, I've been looking at different WORK/Rays wheels and am a little confused as different sites spec different offsets for RX8s for very similar types of wheels. I really would like a 19" wheel because I like how it fills out the wheel wells - so if you have any recommendations for 19" wheel size offsets for WORK or Rays wheels, maybe that will help me out more. I've ordered some D2 Coilovers to accompany the new set of wheels I'm looking at ordering.

Thanks in advance!

18x9.5 +20 is pretty aggressive, here is a really good write up on fitting 18x9.5 +22

https://www.rx8club.com/rx-8-multime...-233973/page7/

I posted my wheels a few post back on this thread 18X9.5 +30.

Pics for 19x9.5 +38 https://www.instagram.com/anth0ny_m/ this is an easy fitment could push out a bit more

thanks so much @countchalkula - Really appreciate your advice. Will help me out a lot. Cheers!

Finally. Skinny wheels pushed way out is not aggressive. That's just being a poseur. Aggressive is really 10" or more width with fat tires.

With around +50 offset 18"x 10" with 285/30-18 pretty much bolts on without any mods. Maybe with a really fat 285 like a Hoosier race tire you might have to roll the wheel lip flange flat, but most street 285s are no problem.

Here's mine with 295/30-18 on 18 x 10.5+43 and rear wheel lip flattened


https://cimg0.ibsrv.net/gimg/www.rx8...a9c95a77e1.jpg

After some time and more research and teasing myself, would like to bug the knowledgeable again with a more specific inquiry/verification :p

From what I understand rummaging through as many related threads as possible is as follows:

Stock diameter is 26" and the general rule is to stick within 3%, and besides a special case rim design, 17" is the lower limit rim for the bigger stock brakes. I mention the special case because of some info from I think wrx forums squeezing a specific rim that was an inch smaller than they usually could (iirc 15" over their brakes where most rims that size would rub); other than that you can go as large a rim as you can find a width and profile to match your desired closeness to original diameter (minus % giving a slight gearing effect such as going to a higher ratio diff (in case I say that terminology wrong, I intend the direction of say 4.444 to 4.777, shorter gear right?), which on a non lowered car might slightly affect perceived wheel well gap.

So next, ignoring diameter as much as it can sensibly be done, the maximum no fender mod and still clear suspension (assuming you aren't bulging the tires) is 10.5 +42. At this width, 265 is a near perfect match as it is 1.7 mm less wide (10.5" = 266.7mm). Depending on manufacturer sidewall characteristics along with rim height plus profile used, going wider could start to cause issues, less wide could give more clearance but you begin to get the 'stretched' look. And just for putting the info I received using calculators, this 265 tire on 10.5 +42 would be 24mm closer to suspension and 40 mm closer to fender compared to the stock 8" +50 offset wheels (in case this info would help others). Some have squeezed 285s iirc.

Aftermarket brakes bigger or smaller would change your wheel height lower limit range, coilover/suspension mods and fender rolling/pulling extends your width. For every half inch you can squeeze in more width doing this, you need to subtract approximately 6-7mm from your offset to keep the wheel 'centered' similarly, ex: 11" +36. Adding makes it more convex, subtracting makes it more concave (deep dish). The amount you adjust needs to take into account 1" = 25.4mm. With this info it should be relatively easy to place the wheels where you want them within a controlled margin of error. To stay flush with more narrow rims, you add offset that relates to your goals and choices. So doing head math and using the stated info so far, 'flush' on stock 8" rim width would be +73-74? (2.5" = 63.5mm /2 = 31.75mm increased off set from the 10.5 +42 flush)


So, with all that info I've gleaned and possibly misunderstood;
I could go with Bridgestone potenza s-02 265/35R18 tires on work meister m1 18x10.5 et+42 wheels on a stock 8 with no roll/pull, though be pretty much at the limit.

I still plan a possible 1-2" drop from stock. Alignment goals would be a minimal toe in front and rear for straight line stability, camber to around -2.4 front and -2.1 rear, and max caster after camber is set; but the merits of those settings from that research is for a different thread, but it still affects tire position and rubbing potential, so added it ;)

Will be waiting for responses to learn what I've gotten wrong and right :)

Most of it makes sense....except the red bit I highlighted. You want to move the hub face towards the center of the stock wheels...so you would subtract the amount you want to move them out. So on a stock wheel if you want to move them out 1" you subtract the 1" from the +50 offset and end up with a +25 offset approximately

The tire sidewall profile can make a difference when you are getting to the 10.5"265 profile tires. Some will fit and others not so well...and you might need a bit of a roll

Front wheels are at 235/40/18x8.75 +22 sitting on bc coilovers. Question is, what size spacer would I need to flush this? I'm going with ichiba hubcentric spacers

Depends a lot on alignment and tire profile and fender position. Easiest thing is to take a straight edge on them the way they sit and measure how much room you have at the point that will cause rubbing first.

Honestly there can't be much room now I wouldn't expect

I really like the fitment on this members 8 and I'm thinking of purchasing work emotion d9rs 18x9.5 but idk what offset to go with to achieve this look. Help pls? Will the front wheels fit the same way with equal offset all around? Also what tire size should i go with?

https://cimg1.ibsrv.net/gimg/www.rx8...890d676d86.png

Those are probably somewhere around a +22mm offset, but he has MEGA stretched tires on there (can't say I'm a fan of the stretch) and those would definitely rub on the front fender liner without a bunch of cutting.

If it is just the flushness of the tread to the fender you like, mine are 18x9.5 +30mm and they are nice and flush all around:

http://i68.tinypic.com/1zbz76o.png

http://i63.tinypic.com/16k6g41.png

These are 255/35 tires, I didnt want to risk any rubbing but you could fit 265/35 tires on too and they would poke out from the fenders very slightly.

Cosmis Racing
 

I am in for a set of Cosmis Racing Xt-206r 18x9" ET33.
My current set up is stock rim 18x8 Et50 wrapped in 235/40/18 dunlop rt2.
Also coilovers from Bc Racing are installed lowering the car around 1inch (25mm).
| Will They Fit says
"Compared to your existing wheel, this new wheel will have an inner rim which is 4.3mm further away from the suspension strut. The outer rim will poke out 29.7mm more than before."
So will it fit with no issues?
The car is daily driven

I did a couple of searches and tried reading through the 447 pages to find the answer to my questions but gave up. Please forgive me if I should have been able to find this on my own.

I have a new to me RX8 in need of new rims and tires. I found some Mustang GT rims that appear like they would fit based on what I have read but wanted to make sure before I committed.

1) 18x8x40mm Have 235-50 Pirelli tires on them. Mostly interested in knowing if these would be a good tire size for the RX8?
2) 19x9x45mm No tires. Would I be better off buying these and getting some tires? If so, what would be a good recommendation?

Thanks in advance

1) Those tires are ~5% larger than OEM. That means that you'll be going 5% faster than your speedo indicates. I don't see any reason why they won't fit unless you're slammed.

2) I don't know about inboard clearance. The inner rim of the wheel will be about 7.6 mm closer to the suspension components.

the worst thing you can possibly do is put different size wheels and tires on the same RX8. It will negate the RX8's handling advantage and you can't rotate tires properly which is going to result in short tire life and increased cost.

That shouldn't be an issue with clearing suspension

Team I think he just has two options for tire sizes, not staggering them, but I agree a square setup is much more practical.

Yes, thank you. I have the option of 4 same size tires with rims or w same size rims without tires. No plans to go different sizes.

IMO you are better off with option 2, the tires on option 1 are too meaty. With option 2 I'd say you'd be okay with the 255/35 or 265/35 option.

255's will be exact same size as stock on the 19's but with just over 1" more width.
265's will be slightly larger diameter than stock and will be about 1.5" wider, but I'm unsure about rubbing up front with the 265's; would probably be minor if at all though.