Stiff Wall Slick or MT Radial Pro 275?

[bossmustang18]

will be running a 19x9.5 radial street tire up front and just wondering which tire is better for my 2010 3v 5 speed.
275/60/15 radial pro or 28x10.5x15S... heard the sway is really bad with a slick.. feel free to chime in anybody
i cut 1.65 60's on the pros haven't tried the slicks yet.. and if anyone knows how the pro is different from a regular radial please chime in. thanks

 

[fauls gt500]

What tire pressure you at I'm in a 4020 lbs shelby with factory front wheels on same tire cutting mid 1.4 60 foot @ 15 lbs of air