Graining Meaning in Formula 1

Graining occurs when small rubber pieces build up on the tire. This happens when the surface slides too much. The sliding tears the rubber unevenly. Grip decreases as the surface becomes rough. For example, cold tyres may slide early in a stint. This creates graining on the front tires. Drivers may need to slow down to recover grip. Sometimes the surface cleans itself after several laps. Managing temperature helps prevent graining. It often appears in cooler conditions.