The z06 comes with R Compound tires from the factory? Cause the Z/28 does. Also i heard it has the biggest front tires to ever be put on a production car (285 i think? might be bigger). Pretty sure the rim size is 19x11 front and 19x11.5 rear. Also it has huge brakes front and back (15"+ rotors all the way around, multi piston fixed calipers)
Also something about the Z/28 it has all there most advance technology at the time (Traction Control, Stability, Magnetic Ride etc.) and then you can also get it with hardly anything in it. I know it comes without sound dead-ener (sp?*) and a bunch of other little things. Manual seats for weight, redesigned back seats for weight, a lot of little things to drop the weight.
I predict that this will also become a collector car here in a few years, i dont see them making the Z/28 for long and i predict that they will be worth there money or close too for the next 10-20 years, then after that will become a really nice collectable car. Can't say that i dont wanna drive the shit out of one though, they seem like a SWEET car. Plus i absolutely love the looks of it, best looking 5th gen period.