Very well done tire If you had cut out the black strips that represent the tread, and glued a pice behind (black), when the tire was finished, you could paint it with Liquid Electrical Tape, and that tire looks real, then you realize the groves are far too large, and you do it over again with smaller slits. It works as a graphics as there is no depth.
I just went for a ride on my Suzuki yesterday, I blew the Generator Stator coil and the voltage regulator/rectifier. Had to flat bed the motorcycle home. It costs only around $200 bucks in parts, and the last parts lasted 20 years, so I'm still ahead of the curve.
The tires came out great. That's one of those features that can really make a model, and you have done them justice. They have that oh so necessary rubber look to them.