It says in the sticky to use 7.5"bs on a 15X10, for a 1995 trans am. Would 7"bs work. I'm wanting it for telstars or convo pros.

 

The 7.5" backspace is required for a 10" wide wheel. Doesn't matter who made the wheels, or how they made them, or what they look like. A 7.0" BS will stick out 1/2" more than the photo link in the sticky. You have to decide if that will look OK. The photo has either a 28x10.5-15W or a 28x11.5-15 (I can't remember which). If you use a narrower tire, the reduced section width will offset some of the decreased backspace, and they may look OK.

 

I was wanting the 275/60R15 in a MT ET street radial. Does MT make a 255 section width 15" tire?