If the wheels have been run for a while, no problem. Once the wheel sections are firmly locked together they're as safe as any other wheel. Wear, rust, and/or any other damage to the very narrow locking area is what makes these wheels so dangerous, as they are prone to separate explosively while the tires are being inflated. One precaution that should be observed on any multi-piece wheel- - - - -if the tire pressure is more than a few pounds low, don't try to add air. Never, ever try to air up one that's gone flat. The pressure on the bead rings is what keeps everything locked together and even a good condition wheel can separate if it's re-pressurized after the locking parts get out of alignment.
Jerry
