Yes I know they are 20 inch diameter.... I'm taking about rim width.

Ok. You need to find out these 3 things about those rims

Width
Offset
Backspacing

 

Also to differentiate between tires and rims:
Tires are round black things; come in sizes indicated like P255/55/ZR20
Explained very well here: http://www.tirerack.com/tires/tirete...150227194322:s

Wheels ("rims" colloquialism) are what the tires are mounted on and these wheels with tires are attached to the hub or spindle.

Hope this helps you sort out that portion.

 

interesting he isnt responding back to the above 3 things....maybe he thinks im an idiot LOL

here is a link to the actual rim if it helps:
MSR Wheels 042 Super Finish Black Wheels | 4WheelOnline.com

it looks like +40 mm and BS 5.76 according to the drop down at the bottom

 

Those wheels are only 7.5 inches wide. I'd want at least an 8 inch wide rim so you can put a 235 wide tire or wider on them. Does that linked ad say those will fit a mustang?

 

Nothing screams quality and confidence more than "Nankang" and "No Name".

 

no but according to the guy they will...it has a 5 X 114 pattern

the other RTX are 245/35/20 with a + 38 and a 9.5 BS
these were on a subaru and he is 100% sure they will fit on a my car

 

Hey, that's like the dealership that was 100% sure they had they last manual in Ontario ! Karma dude....Kar-ma.