I found some bronze str 526 rims on ebay I like but they are 17x9 front and 17x10 rear this is going on a 08 Cobalt ls 2.2l, it is lowered but I have no idea what manufacturer the lowering kit is on and if it's just springs or full coilovers I will have to check with this being said I would plan to get a coilovers kit if needed

So the big question, will it fit without rubbing or should I get somthing alittle less wide

 

You would get mad poke without proper fitment and you will most like rub.

 

But you left out the offset size

 

Assuming the offset is low enough to not hit the calipers (maybe 40 or less), it will be extremely difficult to find tires that will be wide enough to fit the wheels safely and still be small enough in diameter to work without rubbing.

I'd take a pass for sure