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Discussion Starter · #1 ·
Hey i was wondering if you guys had any idea if ill have a clearance issue if i use 18X10 FR500 deep dish wheels and a 305/45/R18 nitto NT555R Drag radial due to the height or width of the tire its advertised at 28in tall and 12 wide, was also wondering if anybody had them on their car and could send me a pic of them on??? i have a 1999 mustang gt with stock ride height. any help would be greatly appreciated thanks.
 

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BYAHHHH!
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dude great thread! I am wondering the same! I have 18's and want Nitto 555R's 305/45/18s!
 

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BYAHHHH!
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I think I rather get a 305/45 for rpm/mph for the 1/4 mile

Got pics of your car man...prob looks sick!
 

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295 35 18 rear and 275 35 18 front & slammed (~2.5) I rubbed fender liners in the front and lightly cut my back tires whenever I hit a hard bump doing 45+. That was pre rolled fenders though.
 

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Discussion Starter · #7 ·
well i was wanting the larger tire one for looks and two for the fact that their wider and taller so there is more contact patch to the pavement i was gonna step up my gear for the difference in tire height i would love for this setup to work, not to mention the 305/45s are actually about 10 or 15 $s cheaper than the alternative 285/35 nitto
 

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Abyssinian of AX
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lferg1... 305/45/18" tire is just a bit under 29" diameter and would not run such a large tire on your ride. You will VERY likely have rubbing issues as well as pretty tall gearing.

Jazzer :)
 

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BYAHHHH!
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(305*.9)/25.4+18 = 28.8" That's huge. Like jazzer said it'll probably rub. You're never going to be able to lower it with that big of a tire.

You could possibly have problems with your brake system if the back is up a lot higher than the front. I stuck some tall tires from my Demon on the Stang for a track day, and my ABS light was on all day.
 

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The standard for raking a car (back end higher than the front) is a 3% difference in tire height before you start running into braking problems. 3% over stock is about 26.5", so like a 305/35/18. This is assuming you keep the front tire at stock size. If you put a bigger tire on the back AND front, coupled with the stock (read: high) ride height your car is gonna look like a mud bogger.

Why do you want such a huge sidewall?
 

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305/40/18 doesn't seem all do high?

I just want a little more rpms
The 305/40/18 doesn't look too high because most of the pictures I'm seeing of that tire is on an s197. Those GTs come stock with 235/50/18s IIRC so that's a 27.25" tire. A 305/40/18 is a 27.6" tire, so it's not gonna look that different on the newer mustangs. That tire is going to be almost two full inches taller than your stock new edge size, I think it's gonna look huge.

And if you want more rpms you need to get smaller diameter tires, not bigger ones.
 
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