What is the largest rear and front tires that will fit Also what rim size would you go with and where is a good place to buy them. Any comment will help.

 

Im saving up for 18X10's rear, and 18X9's front in the near future.
Not sure how much wider you could go, but that's a good width for me. 285-40 and 255-45, back to front.
this is a good place http://www.mustangtuning.com/2005wheels.html

 

I got 18x10.5 in the rear and 18x9 in front off of tirerack.com good speedy delivery!

 

Drumstyxs since you put on your 18's does it feel like the clutch slips sometimes when you get on it ?

 

On a S197 a 285/30ZR20 is what we installed for test fitting our new 20X10-inch rims they fit well in the back. On the front we suggest a 255/35ZR20 or a 245/35ZR20 on a 20X9-inch rim. On our prototype 18X10-inch rims we used a 295/35ZR18 it fit well but looked to short in the wheel opening on the rear of the car. As for fronts 18X9 with 275/40ZR18 look real good and work all the way around as well.

 

18x10 with 285/40 fit perfectly in the back. People have installed up to 285's in the front as well

 

On a 10-inch rim a 285/40 first perfectly. You just have to be careful on a 9-inch rim because of section width of the 285’s. They start to bulge at the sidewalls making them susceptible to road debris.

 

The 18x9's in the front rub against the inside of the fender whenyou crank the wheel all the way around also. No I havent noticed cluth slipping (its an auto). And one other thing is that there is no a noticable shift to the left in the wheels in the rear, the left rear tire sticks out of the wheel well a little while the right rear is completely under the wheel well, I heard you need a adjustable panhard rod to fix this.

 

yes, an adjustable panhard rod does fix the problem. It is even more noticeable if you have put wider rims/tires on the back and lowered the car like I did.

 

<--- 255/30/22 all the way around

 

285x35x19 on 9.5 rear and 245x40x19 on 8.5 front.

 

Is there a site or online calculator that will tell me the widest tires I can put on my GT with 18x9.5 Rims? I'd really like to keep all 4 tires the same size for ease of rotation and handling.
Thanks,
Jeff

 

I've got 19x10's on the back with 295/35s and they fit great. Ford thought ahead and rolled the inner lips of the wheel wells.

I'm running 19x9's up front with 275/35's too!

Kris

 

how well will 285/35-zr20s fit in back on 10.5 wide
...IF I HAVE A 2.5inch DROP?

 

Here is a site I use. If you put in the tire size it will give you the recommended width plus all kinds of other neat info.

Jon

 

Swingle on these forums has 295/45/18 on the rear on an 18x10 wheel. I'll have the same set up tomorrow afternoon and will post pics sometime over the weekend.

 

Here is an awesome tire calculator site

http://www.bigcustomwheels.com/info_specs.jsp

Put the stock tire dimensions in the first column and what you want to go to in the second. Then down at the bottom it will tell you the difference and things you need to look out for.

 

295/45/18 on the rear. 18x10's. Check my sig. for details.

 

The Grand Am Cup Mustangs run 18x10 with 275/30/18 tires all the way around. They use 3 peice wheels with the a 2 inch outer and 8 inch inner rim. Not sure if that comes out to 8" backspace or not but you can get an idea.

I think it comes out to about a +60 Offset

 

We recoment a 43mm offset on a 20 or 18X9 wheel and a 50mm on a 20 or 18X10 wheel if that answers any questions.