At 8:46 AM -0700 8/8/08, Jerome & Elizabeth Moos wrote:
>All Grand Bois are folding bead, no?
They are folding bead.
> If there was a problem with blowing off wire bead Paselas, I'd
>think any folding tire would be worse.
I have used the Grand Bois tires on old rims without hook beads with no problems. Yes, if you have a loose fit, then a folding bead may stretch a bit more, and may be more likely to blow off. From my experience, it is more important how tight the fit is.
However, there are some manufacturing tolerances in tires and rims. If you have an undersize rim and an oversize tire, you are in trouble no matter what. Trying a different tire from the same maker and model may solve the problem. I once had a Continental tire that kept blowing off. I took it back, and the bike shop said I must have installed in incorrectly. They showed me how, and boom, it blew off. They gave me a refund...
Jan Heine
Editor
Bicycle Quarterly
140 Lakeside Ave #C
Seattle WA 98122
http://www.bikequarterly.com