Who Likes Wheels?

[Rob]

OK, now that it is the offseason, many of us are coming up with concepts to possible use next year. Lots of people are also going over their favorite features of other teams machines. Why don't we share some info?

Wheels are fundamental to the operation of a FIRST robot. What types of wheels does your team prefer, and why?

If you buy your wheels, please list (and say why):

Source
Material
Size
Durometer rating (if applicable)

If you make custom wheels, Please list (and why):

What materials you use
How they are designes/assembled
What the wheels use as tread material and how it is fastened to the wheel

Don't feel left out if you like tracks! Tell us about them as well!

Hopefully everyone can get share some good info that we can all benefit from.
Thanks!

Rob