For the November 2012 issue of Velo magazine, Lennard Zinn headed to the laboratory to see how tire pressure and width affect rolling resistance

Introduced last year, Challenge's file tread is a hybrid that enjoys extra cornering grip thanks to knobs borrowed from the Limus

A dermatologist and Redd Foxx weigh in on hypoallergenic chamois pads and three tubular tire makers give thoughts on diluting Aquaseal

Lennard Zinn details new goods from Interbike, including a retro Fondreist with modern Campy, nutrition from Clif and Challenge tires

Fat and fun road tires, if you don't mind the occasional flat

Should I re-glue my tubulars annually?