GT Performance Mods 2005+ Mustang GT Performance and Technical Information

Wheel Size?

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Old 7/1/08, 04:31 AM
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Wheel Size?

Well I was hoping to upgrade my stock 17inch bullits to 18x9 deep dish bullits. However, I do not want them staggered.

I know the 18x9 should fit without a hitch, however I do not know if I can maximise the rubber on the new rims. I would ideally like to put in 275/40/r18 rubbers all around, however will the rubber interfere in the front? I do not want any rubbing.

I will also be putting in the roush springs with some decent shocks that will drop the ride height a bit.

Anyone have any input?

This will be my first set of rims/tires I purchase and I am not exactly made of money so asking a few questions can save me a buck or two.
Old 7/1/08, 10:12 AM
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IIRC some of the Roush cars are fitted with 275/40R18s at all four corners, might be worth the effort to find out what the dimensions of the wheel are (Roush 427R Trak Pak)

Last edited by bob; 7/1/08 at 10:13 AM.
Old 7/1/08, 07:09 PM
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I would like to know as well. I have 275/40 on 18x8.5 currently on the rear. I want to move them up front.I have the Roush Fascia.
Old 7/1/08, 11:13 PM
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I guess I will have to go to the dealrship to see the wheels. They sell roush mustangs there. I have to go anyway because I still have to do the airbag recall work.
Old 7/2/08, 06:17 AM
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Non staggerd deep dish wheels look like garbage. Get them staggerd.
Old 7/2/08, 06:47 PM
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Originally Posted by Mustangfreak
Non staggerd deep dish wheels look like garbage. Get them staggerd.

I think thats a matter of personal taste. My original question was about the hardware not the look of it.

Thanks for your input though.
Old 7/2/08, 08:46 PM
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Originally Posted by Mustangfreak
Non staggerd deep dish wheels look like garbage. Get them staggerd.
yea - this one looked so bad they put it on the cover of the Brenspeed catalog.
Attached Thumbnails Wheel Size?-100_8914.jpg  
Old 7/7/08, 12:44 AM
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anyone else? 275 wide in the front?
Old 7/7/08, 05:55 AM
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They're not going to rub. I have 275-35-20 on the front, which are almost an inch taller than 275-40-18s, and there are no problems.
Old 7/7/08, 07:53 PM
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Originally Posted by SStang
They're not going to rub. I have 275-35-20 on the front, which are almost an inch taller than 275-40-18s, and there are no problems.

That is the answer I have been looking for. I recntly purchased 4 new take off tpms sensors and the new wheels will get them. Looks like deep dish 18x9 rims all around for me. Now just to get the cash for such a purchase.

Thanks a bunch guys.
Old 7/7/08, 08:05 PM
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They will fit with no issues. Just make sure the wheel offset is for '05-up stangs. +40mm to +45mm will be perfect.
Old 7/9/08, 06:17 AM
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Forgive my ignorance...what is a wheel offset?
Old 7/9/08, 08:30 PM
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Distance from mounting point to center of wheel.

44mm offset is standard for wheels on these cars, but they look pretty tucked in as a result. I think you can go less offset if you don't get wider than 9" wheels, 275 tires. Lot of people with Razors have 24mm offset wheels, and they look good to me. My Saleen wheels are 35mm offset in front.
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