Different tire sizes on front and rear?

so it sounds like it wouldn’t do any good to move the drivers side tires to passenger and vice versa?

I wonder if the people who owned it before me got ripped off by the tire place, as you suggest. I honestly don’t remember the size of the tires I replaced two years ago, but the old ones are cheapo tires, so I wouldn’t be surprised if that’s what happened to them.

Another question: do front tires wear out faster on a front-wheel-drive car? The new tires are on the front wheels, but the (cheapo) back tires seem to have as much tread as the front ones.

Thanks for your help!