Originally Posted by
1nterceptor
The original rims don't have a braking surface; machined sidewall.
You could use the original tire; but I recommend to get another wheel/rim
with sides that brake pads can grab on.
Dahon Speed Uno Weight by
1nterceptor, on Flickr
I don't agree that a new rim is necessary. I used a long-reach Tektro on my UNO: It didn't have the greatest braking power, but it was enough in combination with the rear coaster brake. Honestly, by the time I installed the front, I had already gotten used to coaster braking and still relied on that most of the time. The front was more of a "just in case" brake.