So I have always liked the fr500 style rims, I was looking around for some 19' to replace the stock 19s on my 13 cs and I came across these

http://www.stangmods.com/Black-Machi...200-p/2545.htm

I really like them and want to place an order for them but I have some questions I was hoping you guys might be able to answer. 1)what's the widest I could go in rear with out having to roll the fenders 2) would I still be able to lower the car 3) what lowering springs would you sugest that won't rub the wheels 4) what height would you suggest on the tires. Thabks for any input I really appreciate it

 

I believe the body panels on the GT and the GT500 are identical; if they are, I can tell you that I have 20x11's on the rear, and they fit absolutely flush with the fender:





20x10's will be pretty close to that. The rear tires are 305's.

Regarding dropping the suspension, I can't answer that.

 

Fenders are already rolled from the factory on these cars.

11 inch wheel with an offset in the +52 to +58 range.

Steeda sports give a great ride, handling and a 1 inch drop. They will not rub. Still should look to pair them with some quality adjustable struts like tokico d-specs.

Tire height between 27-27.7 is good with a one inch drop. Toyo r888 can be run front and back at 27.6 with a 275:315 set up. Expensive but incredible.

Just my opinion.

 

Ignore my toyo r888 comment as they do not come in 19's in the sizes I mentioned. Those are 20" sizes

 

Your post says "considering 20 foot", now that is one tall wheel!!! lol!!!!