The other change that surprised me was the ride after swapping tyres. I found the Tern quite leaden with the Schwalbe Duranos on it compared to the Big Apple-Marathon combo on the Dahon. Switching to Big Apples all round has made for a much more fun, lively ride.[/QUOTE]
I chose the Schwalbe Marathon Plus tires as replacements on my Dahon Speed. I read they are really good at resisting punctures. One drawback is that this increases the weight and decreases flexibility of the tire.The puncture resistance is provided by increasing the thickness. This is true for runflat tires on automobiles (BMW). I wonder if its the same for bicycles?