Driftmeister

What is the maximum wheelsize that can be fitted under my FC?
Rolling the arches is no problem, can do that in a minute with some fine tools

18"? 19"? 9" wide? 10" wide? more? And @ what offset?

Ocelot

17"...bigger would fit, but any more than 17's would be ugly as *****. I think most will back me up on this one.

RETed

Rim diameter has nothing to do with it.
So long as you can size the tire to match the rim, you can size it the same as stock wheel diameter.
Realistically speaking, 18" is the most practical, largest diameter you can go.

For safe fitment, 8" front and 9" rear is easy to do.
(I don't like 0.5" sizes.)
8" +30 for front
9" +25 for rear
225 wide tire for front
255 wide tire in back


-Ted

nubian

hey REted, thats with stock suspension right? NOT coil over? also if i got a 1" lowering springs.. would those sizes still work?

BlueSteel

i have 18X8 front 18X10 rear and it looks nasty, no wheel gap at all. i can send u pics if u want.

RETed

The specs I quote are for "safe" sizes and should work for almost any application.
Some coilovers will create more space, and thus you can run more offset due to more clearance on the insides.
As long as the drop is mild (1" is fine), there are not clearance issues.
Some combos might need some minor fender rolling, as the fronts are pretty tight, but this shouldn't be that big a deal.

There is a separate "Official FC wheel fitment" thread in the Suspension section with a lot more info...


-Ted

nubian

heh sorry for semi hy jack of the thread drift, hope it helped you out also

yah i would like to see some pics, nubian@telus.net, nasty as in good, or nasty as in nasty?

thanks reted, i know about that thread, i read for about 2 hours! but i was unsure about the suspension part.. right now when i wedge my hand back there ith my stock rims it feels like it rubbing! the front i mean.. so i want to be damn sure before a drop lots to get some, also from what ive seen on the internet 18x8 w/ 30mm offset, and 18x9 w/ 25mm offset. is a really bad combo! not alot of mtr's list the offset, but do you know of any that could come close to this? i think tsw is one. thanks again

RETed

8" +30 is about as big of an offset I would shoot for in front.
Personally, I would rather have a +27 or +28 offset on an 8" wide rim with a 225 wide tire up front.
This 8" +28 figures out to be the same backspacing as the stock 7" +40 rim.

As for rears, you have a little more space back there.
The stock FD rim will fit, and that's a 8" +50.
This wheel will hit the muffler heat shields a bit, and you need to bend it back a little for clearance.
This is the reference I use for wheel fitment in the rears.
Extrapolating to a 9" wheel, you get a 9" with a +37 offset.
I round the offset down to +35.
So max offset on 9" wheel is +35.
Just for a little more clearance, I'd run a +30 or +25.



-Ted

slimjim16

heres 18" looks dope i think

RETed

The problem with 18" (and larger diameter rims) is you need to run very low profile tires to match the stock wheels rolling diameter.
This means if you hit a pothole, there's more chances of damaging your rims.


-Ted

introVert

I'll take a set of those in 17's for my black 'vert- I like the looks of them.

Driftmeister

Thanks for all the info!

Got my mind made up... A-Teens it will gonna be. 8 & 9" 225/255 on a low chassis...

@ nubian: no problem, it did help me!

Nick86

iTrader: (1)

Very true.



These are 19's. (http://www.rx7.s5.com/ygo20b.htm)

The problem is that the diameter of the OEM wheel isn't much bigger than a 19" wheel!

For example:
Stock Diameter is 24.69 inches.
225/40/19's yeilds a diameter of: 26.09 inches. That's almost 2 inches taller than stock - almost 6%.
Finding that extra room under the fender is an issue.

Even a 225/35/19 would be bigger than stock - but only by about 1/2 an inch.

To get an almost exact Tire size match, he would have to run 205/35/19. As far as I know, that tire size isn't exactly common.

So, yes it can be done, but not easily. As Ted said, 18 is the biggest practical size.

Driftmeister

9-teens was the original plan, but I was worried that indeed the OEM size was smaller, but since your post I've been thinking differently

Here in the NL I can get BF Goodrich's 225/30/19" for € 242,- a piece. Not cheap, but effective come to think of it...

desicions desicions desicions aaaargh

doridori-rx7

iTrader: (3)

As an extreme of what can fit, with 2 1/2" coilovers, I run a set of RPF1's 17x10 " +18 with 275/40R17 Falkens in the rear ( however a set of +24 would tuck the wheel comfortably with @ 2cm clearence between the coil and rubber. ) in the front I have a 17x9.5" +38 with 235/45R17 ( scrub angle is pretty close to OEM with a slight inward push. ) a 2.0 front camber was able to tuck the OEM fender with a roll, as it is a set of +30mm widebody fenders all around are more then enough to tuck the tyres ..

so you can go pretty big if you want/need.. it's all about offsets and scrub angles with width , just make sure you look at tyre fitment vs. OD sizes in some cases going from a 40 to 45 profile in a +2 size difference can put you over an inch up from OEM OD. never leave it to a tyre shop to decide the tyre size for you.. I've never seen one that actually looks at the OD when fitting a tyre

raising arizona

I have the same wheels and didn't know they offered those widths..

Here are my RPF1's

rear: 17 x 9.5 +33mm w/ 225
front: 17 x 8.5 +40mm w/ 275

Nick86

iTrader: (1)

Remember, just because you can, doesn't mean you should!

doridori-rx7

iTrader: (3)

the widths you have are the biggest you can get in US.. I ordered mine right from japan.. in this size they only offer two offsets +18 /+ 38 .. and here in Canada the reseller for Enkei won't even let you stagger sizes, tards..

RETed

It doesn't hit the springs first - it hits the front trailing arm first.


-Ted

RETed

It is not recommended to run signficant deviations from the stock wheel diameters.
Your speedometer will be off!
Unless you can find a trans shop that can get you a custom adapter gear to match the (rear) wheel rolling diameter, you can't use the stock speedo for beans.

Now, running really large rims adds another problem - weight.
Really heavy rims taxes the suspension and bearings unnecessarily.
Handling performance is going to suffer.
This is why I stated 18" is biggest practical.
Running larger is certainly going to significantly add a lot of weight.
It becomes a "show thing" rather than a performance thing when going 19" or larger...


-Ted

Crusader_9x

Do you mean
rear: 17 x 9.5 +33mm w/ 275
front: 17 x 8.5 +40mm w/ 225
instead? Also can you attacha bigger picture?

The Griffin

Do you have any kind of fender work(flares/fenders) on the car? I might be missing what you are saying.... as those 17x10's ,18mm offset won't fit under the stock rears fenders with 275/40's without some amount of work to the fender.What's the point of a 9.5 inch rim if you are stretching a 235/40 over it? Better yet , post some pics I bet I'm not the only that wants to see this

gerbraldy

I'd say get a nice set of 15" with 50 profile tires. I got that on my stock vert rims and IMO it looks sweet.

doridori-rx7

iTrader: (3)

the rears are just outside the fender lip.. were talking by the width of the sidewall to tread bevel. i said above that with 2 1/2" coilovers a +24 to +30 would probably be a better chioce. the siewalls on the 10"/275 combo are straight 90 deg. to the road surface like normal.. the fronts are trapzoid, leaving very little lateral movement , better for choku dori drifting then a normal fitting tyre. With a 2 deg camber on the fronts I can get the tyres to swing in under the fender lip... just. I mentioned that a set of +30mm front / rear fenders is the way to go with this size at this off set.. but with 2 1/2" springs you can move the offset inwards enought to avoid the lip and the the lip rollover. the wheels are 1/2 buried in snow right now however I can take pics and sent them to you if you want to post em..

The Griffin

Ok got it, yeah see why you are only running a 235/40 on the fronts then.How did you get around the rubbing in the rear? cheers