Pirelli launches P Zero SL-R, claiming it is the fastest in the peloton

Pirelli has announced a new tyre technology aimed at optimising wheel and tyre aerodynamics, called PAAS (Pirelli Advanced Aerodynamic System), which it claims can reduce drag. The patented concept focuses on reshaping the tyre profile to better manage airflow, particularly at the higher speeds typical of modern road racing. PAAS alters where the tyre’s widest point sits in relation to the tyre's height above the rim, aiming to keep airflow attached to the sidewall and reduce turbulence. The company says the gains are present at yaw angles up to ±20°, where disruptions to airflow can limit the performance of increasingly wide rims and tyres. Based on internal testing, Pirelli is claiming the new technology can offer a 20% (5-watt) reduction in drag compared to its existing P Zero Race TLR RS setup. Pirelli goes on to claim that these aerodynamic gains come without compromising rolling resistance, weight, or usability, with the tyre already claiming stage wins under Jonathan Milan at the AlUla Tour earlier this year. The Pirelli P Zero Race SL-R will launch in 28 and 30 mm widths with a retail price of €100 / £95 / US$128 / AUD$156