Anyone ever use them, seen them on a bike? seems odd. do they not add a lot of extra rotational weight to the wheels? i know that is bad for a mtn bike, is it bad for a motorcycle? is there a lot of maintenance? :think:
Never used them but read about them. Adds less weight than a bib mousse foam insert, which is what most off-road pros use to avoid flats. Also supposed to be a bit easier to change tires, though will still be a pain compared to a tube.
I think Dirt Rider did a write up on them, but I can't find it on-line. From what I remember the benefits are that they don't feel "dead" like a tube and you can have a puncture, or a few punctures and you still have the rest of the balls inflated. I think it was fairly expensive ($100+) and they had a special mounting fixture.
If you absolutely cannot afford to have a flat, the inserts or the balls would make sense, but otherwise an ultra-heavy-duty tube works well. I haven't been able to flatten one yet.
I looked at the Tire Balls stuff at a GNCC race last spring. Neat idea, and it looks like it works well, but unless I was racing for a living I don't feel I can justify the cost ($260/tire) and the pain in the backside from changing a tire with them. I might feel differently though if I drove 1200 miles just to race with the big dogs and I got a race-ending flat on the first lap - especially if I ruined a wheel trying to get back to civilization.
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