Let's say it, MotoGP15 isn't that much improvement from 14, expecially when it comes with graphics.
The loading screens are low-res, and that ugly track screenshots really piss me off.
So i decided to make this mod.
Extract GFXPAK.MIX in your main MotoGP15 folder. Make always backup.
UPDATE: this mod from user Giovaneveterano is way much more better! great work.