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-   -   18x10.5s all around? (https://www.thirdgen.org/forums/wheels-tires/448870-18x10-5s-all-around.html)

Firebat 11-15-2007 11:26 AM

18x10.5s all around?
 
Possible with 1 inch drop and widest tires? Good idea? I want to be able to rotate tires

//<86TA>\\ 11-15-2007 03:51 PM

Re: 18x10.5s all around?
 
you will never get them to fit up front

three05s10 11-15-2007 04:41 PM

Re: 18x10.5s all around?
 
i wouldnt say you could NEVER get it done, but i will say good luck. lol i run around a 1.5/2 inch drop with 17x9.5s with a 255/45 upfront and they rub at a lil before full lock. i need to get some 255/35's really tho, as i have 18x10.5s with 315/30/18s in the back. good luck, maybe somebody will chime in whos got 18s up front.

BADNBLK 11-15-2007 04:49 PM

Re: 18x10.5s all around?
 
I got 18x9s up front and there is some room, but not much... trial and error is probably your only choice.

Really do you need to rotate them that bad?? Plus your gonna wanna put drag radials on the back anyway, and you know that those will never see the front.

Rocksiroc 11-15-2007 06:24 PM

Re: 18x10.5s all around?
 
I have 17x9.5s with 275 tires all around. Im running 2.25 spacers and car is stock height its an 86 iroc. Rubs very slighly at full lock

pearl_iroc 11-15-2007 08:30 PM

Re: 18x10.5s all around?
 
i got 275 35 18 up front no rubbing at all :)

//<86TA>\\ 11-15-2007 08:32 PM

Re: 18x10.5s all around?
 

Originally Posted by three05s10 (Post 3533917)
i wouldnt say you could NEVER get it done, but i will say good luck. .

thats kinda what i meant, ive seen a car with 10 up front, and they stuck out a bit, i think i have a pic let me see......
i do!
http://i153.photobucket.com/albums/s...deasstires.jpg
10 on front 12 on back, with major stick-outage.

iansane 11-17-2007 04:36 PM

Re: 18x10.5s all around?
 
You can fit 10's up without that classic trailerpark look. I had 18x9.5's with 275's for quite a while. Even dropped 2.5" I never rubbed. It's all about where the wheel is sitting in the fender. I jumped to a narrower wheel, 8.5" with the same width tire and now when I reverse quickly at full lock I'll get a little rubbage. If my rear tires were shorter, (they're a ~27" tall) I'd try fitting up my 19x10's but oh well.

Orr89RocZ 11-17-2007 04:55 PM

Re: 18x10.5s all around?
 
it can be done but i think you need good clearancing up front. SCCA guys do it i believe. i've seen 4th gens with 17x11's all around. its gonna come down to the tire tho, you'll need to keep the sidewall as short as possible

Firebat 11-17-2007 05:23 PM

Re: 18x10.5s all around?
 
Probably a far fetched idea. Thanks guys for your input though. I'll go a different route.

Brisk 11-17-2007 05:34 PM

Re: 18x10.5s all around?
 

Originally Posted by //<86TA>\\ (Post 3534288)
thats kinda what i meant, ive seen a car with 10 up front, and they stuck out a bit, i think i have a pic let me see......
i do!
http://i153.photobucket.com/albums/s...deasstires.jpg
10 on front 12 on back, with major stick-outage.

LOL! That may look trailer park, but at that view point it looks all business, especially with the driver wearing a helmet!

//<86TA>\\ 11-17-2007 08:12 PM

Re: 18x10.5s all around?
 
it was an auto cross car, the wheels were for sale on ebay a while back thats where i got the pics

Dewey316 11-19-2007 07:08 PM

Re: 18x10.5s all around?
 
It can be done, with some work, and the right wheels.

Here is a picture of Karl Hunters car at the Knox Hillclimb, he was sporting 18x11 CCW's on all 4 corners.

http://www.knoxmtnhillclimb.ca/galle...s/IMG_2441.jpg

92RS(real slow) 11-19-2007 10:30 PM

Re: 18x10.5s all around?
 

Originally Posted by Dewey316 (Post 3538247)
It can be done, with some work, and the right wheels.

Here is a picture of Karl Hunters car at the Knox Hillclimb, he was sporting 18x11 CCW's on all 4 corners.

http://www.knoxmtnhillclimb.ca/galle...s/IMG_2441.jpg

that is amazing omg:eek:

Dewey316 11-20-2007 12:16 AM

Re: 18x10.5s all around?
 
It took some searching, but here is another picture.

https://www.thirdgen.org/forums/post...20-post20.html

Here was his quote later in the thread.


The wheels are from Complete Custom Wheel in Florida.

They are all 18" X 11" wide. The backspace is the same on all 4 wheels, but I use spacers on all 4 wheels to achieve the "perfect" fit front and rear. CCW makes wheels to the 1/4" in backspace and width, but you never know "exactly" where the clearance issues will be until you get the car on the track. It is amazing what flexes and bends on these cars. Downright frightening in some cases.

Modifications are required on both ends of the car to get this big of a wheel under the fenders. Prodigious use of a BFH is necessary. Trimming of the front fenders is necessary. Rolling of all the lips is necessary. Fender liners optional.

I would never recommend anything this big for the street. Maybe on the rear, but never on the front. 9.5" wide is the largest wheel I would put on the front for the street.

I run Good Year Eagle Radial Slicks - road race. Not street legal. 25.5X11.5-18 front and 25.5X12.5-18 rear.

charlie31603 11-20-2007 06:27 PM

Re: 18x10.5s all around?
 
I had 18x10's all they way around on the vert in my sig. Just added 2" spacers and never had a problem unless at full lock. Adam :-)

iansane 11-23-2007 12:58 PM

Re: 18x10.5s all around?
 

Originally Posted by Dewey316 (Post 3538247)
It can be done, with some work, and the right wheels.

Here is a picture of Karl Hunters car at the Knox Hillclimb, he was sporting 18x11 CCW's on all 4 corners.

I love that car.

jersyboyy 04-14-2009 09:08 PM

Re: 18x10.5s all around?
 

Originally Posted by three05s10 (Post 3533917)
i wouldnt say you could NEVER get it done, but i will say good luck. lol i run around a 1.5/2 inch drop with 17x9.5s with a 255/45 upfront and they rub at a lil before full lock. i need to get some 255/35's really tho, as i have 18x10.5s with 315/30/18s in the back. good luck, maybe somebody will chime in whos got 18s up front.

i have y2k 18"s for my rear and im looking at widest size tires I can fit with out too much work...you said your running 315/30/18 did you need any tubbing or anything special done to make that tire fit? Pm me because I dont mean to hijack this thread but im very interested.
Thanks

BIG_MODS 04-15-2009 03:39 PM

Re: 18x10.5s all around?
 
1 Attachment(s)
18x10.5 fits good:

Attachment 432982

More details here: http://www.frrax.com/rrforum/index.php?showtopic=12907

//<86TA>\\ 04-15-2009 04:55 PM

Re: 18x10.5s all around?
 

Originally Posted by BIG_MODS (Post 4122045)
18x10.5 fits good:



More details here: http://www.frrax.com/rrforum/index.php?showtopic=12907

have you ever checked to see what you back spacing is? i know your running spaces. How much can you turn the wheel before they hit something? A-arms or swaybar?

BIG_MODS 04-16-2009 07:49 AM

Re: 18x10.5s all around?
 
yeah, IIRC it one pair of wheels was 58mm and the other was 56.

Did you look at the pictures on photobucket?

The tires *might* touch the inner fender at full lock, but I'm not that concerned. I never checked that with the car on the ground.

Firebat 04-16-2009 09:12 AM

Re: 18x10.5s all around?
 
what size and brand of tires were installed?

1MeanZ 04-16-2009 11:37 AM

Re: 18x10.5s all around?
 
they are hoosier race tires. I think he's running 295s.

razor 04-16-2009 07:54 PM

Re: 18x10.5s all around?
 

Originally Posted by jersyboyy (Post 4121048)
i have y2k 18"s for my rear and im looking at widest size tires I can fit with out too much work...you said your running 315/30/18 did you need any tubbing or anything special done to make that tire fit? Pm me because I dont mean to hijack this thread but im very interested.
Thanks


I run 18x9.5 Y2K's all around with a 1.6"-2" drop. On the back I have MT Sportsman SR's that are 18x26x12 and up front I currently run a 245/40/18 .

With a proper allignment and spacing I have zero issues with front tires touching on full lock. The car also has the bump stops removed from the rear and some vewry slight massaging of the rear inner wheel wells. I will be going to a 275/35/18 on the front this spring when the car comes out from its engine modfest.

BIG_MODS 04-16-2009 08:36 PM

Re: 18x10.5s all around?
 
The tires are Hoosier Grand Am Cups, 275/35/18, but in reality they are probably more like a 295. They are a spec tire for (guess what?) the Grand Am Cup series. They call for a 10-10.5" rim. I had them on a 9.5 before, and the worked, but were pinched pretty good. So I got the 10.5's.


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