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18x10.5s all around?

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Old 11-15-2007, 11:26 AM
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18x10.5s all around?

Possible with 1 inch drop and widest tires? Good idea? I want to be able to rotate tires
Old 11-15-2007, 03:51 PM
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Re: 18x10.5s all around?

you will never get them to fit up front
Old 11-15-2007, 04:41 PM
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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.
Old 11-15-2007, 04:49 PM
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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.
Old 11-15-2007, 06:24 PM
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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
Old 11-15-2007, 08:30 PM
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Re: 18x10.5s all around?

i got 275 35 18 up front no rubbing at all
Old 11-15-2007, 08:32 PM
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Re: 18x10.5s all around?

Originally Posted by three05s10
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!

10 on front 12 on back, with major stick-outage.
Old 11-17-2007, 04:36 PM
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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.
Old 11-17-2007, 04:55 PM
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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
Old 11-17-2007, 05:23 PM
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Re: 18x10.5s all around?

Probably a far fetched idea. Thanks guys for your input though. I'll go a different route.
Old 11-17-2007, 05:34 PM
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Re: 18x10.5s all around?

Originally Posted by //<86TA>\\
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!

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!
Old 11-17-2007, 08:12 PM
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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
Old 11-19-2007, 07:08 PM
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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.

Old 11-19-2007, 10:30 PM
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Re: 18x10.5s all around?

Originally Posted by Dewey316
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.

that is amazing omg
Old 11-20-2007, 12:16 AM
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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.
Old 11-20-2007, 06:27 PM
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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 :-)
Old 11-23-2007, 12:58 PM
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Re: 18x10.5s all around?

Originally Posted by Dewey316
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.
Old 04-14-2009, 09:08 PM
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Re: 18x10.5s all around?

Originally Posted by three05s10
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
Old 04-15-2009, 03:39 PM
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Re: 18x10.5s all around?

18x10.5 fits good:

Name:  Grattan1.jpg
Views: 1312
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More details here: http://www.frrax.com/rrforum/index.php?showtopic=12907
Old 04-15-2009, 04:55 PM
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Re: 18x10.5s all around?

Originally Posted by BIG_MODS
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?
Old 04-16-2009, 07:49 AM
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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.
Old 04-16-2009, 09:12 AM
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Re: 18x10.5s all around?

what size and brand of tires were installed?
Old 04-16-2009, 11:37 AM
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Re: 18x10.5s all around?

they are hoosier race tires. I think he's running 295s.
Old 04-16-2009, 07:54 PM
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Re: 18x10.5s all around?

Originally Posted by jersyboyy
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.
Old 04-16-2009, 08:36 PM
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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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