are these worth it
 

31" Tires on 15" Wheels (5x5.)

sorry it's a link, i have an 85 s10 blazer. i know the lugs aren't the same but i thought maybe they would mount on my rims?

Personally? I wouldn't touch them. They'd fit your rims but you'd have to lift some and why would you want someone's worn out M/T's? They won't hook near as well as a new set. 5x5.5" would fit an old body style Fullsize though. lol

very much appreciated