Dahon's website lists the Gear Inches for the Curve D3 as 42"/56"/77"
I can't find the same type of information at Downtube's website.
To James H Haury, the Curve D3 has big fat tires on it right now. The site says that the fenders are made to accept the fat tires.
I'm not sure that if I bought a Downtube Mini instead of the Curve D3, I don't know if I should spend the extra $100 on the Capreo version. Do you think it is money well spent?
Thanks again to everyone for their help.