There are already a couple of threads in this forum about the strut rub issue.
http://forums.maxperformanceinc.com/...d.php?t=510026
http://forums.maxperformanceinc.com/...d.php?t=510632
....many more on LS1GTO.com too.
As I mentioned in one of those threads this is a serious safety concern because many owners do not inspect their own cars, nor would they know what to look for. Yes, strut rub can be mitigated with an alignment, but as many are now finding the root cause is not necessarily 245 tires on a car designed for 235s. Many cars are being found with compressed and/or torn strut tower bushings, believed to be the result of shipping from Australia. These cars were put on a boat for 3 months, strapped down tightly with spacers wedged into the coil springs to keep them from bouncing around...basically far too much pressure exerted on the suspension over an extended period of time. Collapsed bushings = sloppy suspension = strut rub.
Personally I have not had any more rub since I had my dealership do an alignment, but I will be checking all of my bushings the next time I get the chance. And if they're bad GM will be replacing them under warranty and doing another alignment.
Oh, and I still love the Hell out of this car. It's absolutely badass. GM just needs to do the right thing and keep their customers safe and happy.