Just to be clear, the Hardwire series from Kryptonite is significantly different from the Keeper, Kryptoflex or Modulus cable locks, or any other cable locks I've ever seen. It's much stronger stuff.

I own a Hardwire 2085. It's pretty stout, for a cable lock.

That said, even Kryptonite rates it only for low to moderate crime areas at best. While it is certainly stronger stuff than any other cable lock I've seen, bear in mind that every electrician in the business has cutters on the truck for cable much heavier than the Hardwire.

I use mine mainly to supplement a U-lock, following the "use two types of locks" advice. I'll use it alone only in secure areas or if I'm locking up someplace where I can't find something a U-lock will fit. (In our downtown they've taken away all the parking meters and signposts. All I can lock to are light poles, which are roughly 8-10" in diameter.)

I wouldn't feel secure locking up for all day long in a parking garage with it. And that's coming from someone who likes the lock. Then again, I wouldn't feel secure in the same parking garage with just a U-lock either.