I was replacing some spokes the other day, and it was the first time I'd removed a tyre from this particular bike.  It was fairly heavy going getting the tyre off and on, and the plastic levers that have served me well enough so far are now somewhat more flexible than before.

So does anyone use steel tyre levers?  If a tyre is a bit stubborn is there a risk that the levers will end up damaging the rim?

The plastic levers have been fine up to now, on the three different tyres that my commute bike has seen recently and on the mountain bike.  It's just the weekend bike that's causing the problem, where the curved lip on the levers just isn't strong enough to hook the tyre out of the rim.

The Tacx levers look... different!  I'll see if I can find some in the flesh.  Thanks for the suggestion.