Wow! No posts since last night. Ok, I'll get something going here. Seems like the new thing is wider/bigger 29er tires. My question is why? I race in the midwest (rocks) and east coast (rocks and hills) every year. I really have no problem riding full ridged XC type stuff with 2.1's and I really dont see the need for the big rubber except for all mountian duty. But thats just me. What are your reasons for bigger tires?