There had already spoken before the Singapore Grand Prix on the use of Polysil the rims to try to bring to the correct temperature in a short time the tires Discovered the material used inside of the rims: It called Polysil.
The images seen today at the Austin box we can see that Ferrari uses this material that is produced by a company in Sassuolo called Nanoprom.
some teams, as Red Bull and Mercedes over Polysil to add a sort of knurling inside the circles that has the function of limiting the turbulence that are generated in this very sensitive area for 'overall aerodynamics of the car.
[Source: http://www.f1analisitecnica.com/]
