Torro, because on my skinpack that's Bridgestone and I have the bridgestone logo on my car skins. I put on all the suppliers of my karting on the skin as if they where sponsors as I think the cars look a lot better with race decalling.
Cromo_Plain is a disadvantage as far as i'm concerned, on the Fox with a logo on the tyre I can now tell very easily if i've locked up and (when i'm feeling like a pro and have had lots of caffeine) can let the brake out a bit and roll the tyre again to prevent flatspots. Which is neat
I do it when i'm racing normally, but could never tell if the wheel was locked in LFS before the logos.