[xlr8tr]

I'm running the goodyear billboards, love them, couple of questions as the beast goes into winter storage:

1) it gets a bit cold here, will temps below freezing harm the tire?

2) I've noticed some cracking in the sidewalls, basically where the tread area meets the sidewall, almost as if they were a re-tread. Any serious issues with that? (sorry no pics)

Cheers,