This is all such a crock if crap. Nobody is running 2 junk tires and 2 good tires. Since all 4 should be serviceable. If it's front wheel drive I prefer the the deeper tread on the front for traction in poor weather. Same with rear wheel drive. I would place them on the rear for traction. Now if you dont drive in snow. It probably doesn't matter either way.
Doug
Yup...I used to own an '83 2.2 Charger FWD. Good tires at each corner. Driving home in January, at 1:30am on I-75 (major freeway) ...
I was only driving about 30-35mph going north (speed limit is 70)... snow storm. Without warning I hit black ice, and the car just spun out
did a 360, and I was facing SOUTH... two feet next to the retaining wall! Luckily..it was late and no traffic was behind me.
As I mentioned, all tires were good shape...so tires didn't make a bit of difference in that particular situation.