My girlfriend and her father spotted a set of 205/75/R15 studded snow tires that they believe will fit in my car... I'm concerned about having clearance while I'm driving. They'd be mounted of my rims that have 195/65/R15 tires on them now.

Also... I'm looking for a set of alloy rims that will go nice with this Cobalt. What size combinations can I work with for a standard 4-bolt pattern?