Make sure the tyres are inflated nice and hard (the max. will depend on the type and size of tyre, and your weight) - if you're running underinflated tyres, they will get hot (just like on the road), although it's a great way of increasing the resistance. I've found it's best to position the bike so the front axle is directly above the roller - if it's too far behind the roller, the bike will be (even more) "squirrely" and will feel very unstable.

I have three bikes - the Schwinn and Nishiki both have the same wheel-base, and I've set up the rollers so the bikes fit exactly. My other road bike (Bianchi) is about 3 cm shorter than the other two, and that bike feels quite different on the rollers - it's not impossible, just more "twitchy" (and I'm just too lazy to readjust the rollers each time I change bikes )

As to the tyre wear - I've been riding my rollers since the end of last season, and still use them when the weather is bad for cycling (solid rain for the past week, here in New England), and have never ever seen bits of rubber coming off the tyres. In fact I think the rollers put less wear on the tyres than does riding on the road… FWIW

Hope this helps -

- Wil