Dude, you might have to trim some fender even with the 10.50s. But you're golden with 3" backspacing. Won't have to worry about rubbing the frame at all. The only thing I would be worried about would be your wheel studs. With that much backspacing, you won't have nearly any wheel stud left. If you go wheelin' hard, you have the potential for a tire to fall off depending on how much wheel stud is left. Just something to watch out for when you put the tires on.

 

Y would I have to worry about the stud length? The rim will just sit out farther but will be against the hub/rotors...the rim mounting point inane any thicker than stock, I'm not putting spacers on them..
I have different offset rims on my car from stock and studs are the exact same as factory...

But thanks ..I am going to go with the 1050s to be on the safe side

Here the rim I plan oN getting...they will stick out 2.5 inches further than stock... (1inch wider, 1.5" less backspacing). NO WHEEL SPACERS

 

Oh I don't blame you, wheel spacers aren't the safest thing and I would never run them either. But I have 15x7 camaro wheels with 4.5" inch backspacing. When my wheels and tires were put on, I had little study length left to put the lug nuts on with. So this is why I say this. But if your rims are 15x10 with 3 inch backspacing, you may not have this problem because the width of your rim. I'm just saying watch out for this just in case.

 

They are 15x8s, the tires will be 10.5 wide

But if I do run into this..I will order some longer studs....I had to do this to my car for slicks at the track and run open ended lugs (track requirement)

Thanks for the heads up