Wheels and tires look awesome. I have been off of F-15s for 8 years now, and I never worked C/D models, but I'm pretty sure the Tread wasn't even spaced out on C model tires. It really doesn't matter though, they look awesome. Also, on an E model, there were two types of tires we used when I first started. The Goodyear tires had 3 grooves and the Michelin had 4. I think its all Michelin now, but I cant really speak for the Light Gray jets.