I currently have some Hutchinson Carbon Comp Black 700x23 tires on my bike. I want to get another set to use for training, or perhaps for racing - saving the Hutchinson's for training. The other set is also being purchased so that I have a spare tire for my first century ride (considered a training ride) coming up.
I do triathlons mostly, and I'm interested in getting into road racing and time trialing.
Can I put 700x20 tires on my hubs? (bike nashbar has some on sale)
If so, what should I use the 700x20 tires for, racing or training? (I'll bet it's racing)
How much should I be concerned with tire weight? Again, bike nashbar has some great tire sales right now, but the various sale tires are about 50-100 grams heavier than the Hutchinsons that I currently have mounted.
Basically, can someone recommend a good combination of tires that will both work with what I currently have, with the types of races that I'll be doing?