The wheels are made by Fairlane (
http://www.fairlaneproducts.com/default.asp). We bought ours from McMaster (3/4" bore, 4" diameter, 2" thick, 35A durometer nitrile). Fairlane's site is a little rough, they actually sell them in multiple materials, bores, and durometers - we were able to custom order 1/2" bore from McMaster, even though we ended up using the 3/4" bore model. It seems like Fairlane sells their products online through fixtureworks.net, they have a complete listing of the available options.
They do show wear, it just takes a long time. We've been running the same pair since week 2 of build season, and the bottom edge started to show wear at MAR CMP. Performance didn't seem to change too drastically - subjectively it looked like we had a bit more variation in shot height at World CMP, but I'll have to look at the video from early in the season to see if that's just my imagination. Either way, that was several thousand shots into the season (4 weeks of build season, 67 matches, unbagging time, etc), so they're certainly worlds better than the banebot wheels.
I know that 2016 used the 1" thick version and had to replace them regularly. As far as I know, they are the only other team that had them during build season.
Our team might put together a more detailed analysis of our shooter (amongst other things) later this year, but I can answer any general questions here.