Editor’s note: The colored rims are only for non-competetive sessions such as the Free Practice sessions, and for Qualifying or Racing.
Bridgestone, the now sole provider of tires for the MotoGP series, is taking a cue from from Formula 1 and coloring the rims of MotoGP bikes to indicate the tire compound the rider has selected. Like in Formula 1, green will be used for riders using the soft compound, and red for riders using the hard compound.
For now, this is purely for the enjoyment of TV viewers, but there is speculation that color codes could lead to abuse by teams looking to inject a little disinformation into their rival teams. We imagine safeguards similar to those in Formula 1 will be put in place, and that the coloring scheme will play into MotoGP racing as it has in the pinnacle of auto racing.
Source: Two Wheels Blog