Three things that could be rubbing:
- Calipers on the inside of the wheels (would happen all the time, regardless of what you're doing with the steering wheel, would sound like metal-to-metal grinding)
- Tie-rod ends on the lip of the wheel or sidewall of the tire (might only happen with a slight amount of turning, would sound like metal-to-metal, metal-to-rubber, or possibly rubber-to-rubber)
- Leaf spring on the tire (would only happen when turning a fair bit, would sound like rubber on metal [duh])
Did the 62 come with those wheels? If that's the case, it's possible that the PO ground down the 62's calipers for clearance, and now that the wheels are on the 60 (with presumably unmodified calipers), it's grinding. It's also possible that the 60 just has a different brand of calipers that happen to stick out a bit further than on the 62.
Another thought: maybe the 62 has some old, rusty 1/4" spacers on the front axle that look like they're part of the hub?
To know for sure, get down on the ground and look at the axle side of the wheel. If it's the tie-rod, there ought to be some scuffing around the lip of the wheel and/or the sidewall of the tire. If it's the leaf spring, there'll be scuffing around the outer edge of the tire. To see if it's the caliper, see if you can get a sheet of paper between the caliper housing and the wheel (the 'paper test' works for the tie-rod, too, if you suspect it but there aren't any telltale marks on the wheel/tire.