The Pyrenees bit would put me off the Brompton. Great bike overall, esp for commuting, but imho the handling isn't great once out of a town/commute situation. I've ridden mine (s-type) for 30+ miles around the Chilterns and it's fairly terrifying at speed downhill. I've seen people in the Alps touring on them though, and a bag on the front does calm it down a bit, but it wouldn't be my choice as much as I'd like it to work in places like that. My old Dahon with the re-bar type frame is a much calmer, more confident ride at speed in hilly areas but isn't close the the fold or quality of the Brompton.
Fair dues to them.. I saw a guy riding the other way down Col Angel on one in September. He was going quite steadily as I expect I would too, but was probably just as happy as any other rider there.
The Pyrenees bit would put me off the Brompton. Great bike overall, esp for commuting, but imho the handling isn't great once out of a town/commute situation. I've ridden mine (s-type) for 30+ miles around the Chilterns and it's fairly terrifying at speed downhill. I've seen people in the Alps touring on them though, and a bag on the front does calm it down a bit, but it wouldn't be my choice as much as I'd like it to work in places like that. My old Dahon with the re-bar type frame is a much calmer, more confident ride at speed in hilly areas but isn't close the the fold or quality of the Brompton.