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JonsMustang
10-29-2016, 11:32 AM
Got 255/40-19s factory OEM tires on my 13 GT. Would 245/50R19 fit?
Old Fart
10-29-2016, 11:50 AM
I use this site often...https://tiresize.com/calculator/ The newer tire diameter would be approx. 1.6 inches more.
newbiestangowner
10-29-2016, 11:56 AM
replied to in chat box ^^ these are factory 245/45- before lowering if not lowered than I think u have room with 245/50's

http://i902.photobucket.com/albums/ac222/jjreed1/IMG_3576.jpg
JonsMustang
10-29-2016, 12:06 PM
My bad....7082 these are mines, rolling 255/40-R19
JonsMustang
10-29-2016, 01:05 PM
rolling 255/40-R19 summer and 245/40-R19 Winters
tulowd
10-30-2016, 12:32 PM
Going taller and narrower doesn't make any sense.....unless its for snow tires and you have plenty of inner fender /turning radius clearance and want to increase ground clearance.

Tires need to be mounted on wheels that are 1) ideal width or 2) within the acceptable range of rim width limits the manufacturer specifies

Different brands of tires use different carcasses and sizes, so not all tires are the same dimensions or have the same wheel requirements between brands and even models/types.

I use this Tirerack for most tire / sizing research. Start with the OEM fitment and their recommendations; sometimes tires are specific to a particular vehicle.
http://www.tirerack.com/content/tirerack/desktop/en/tires.html

Then have a look at this: http://www.tirerack.com/tires/sizes/results.jsp?diameter=19