The number of problems owners experience with their original equipment tires has declined by 22 percent to 68.5 problems per 100 vehicles (PP100) in 2014 from 88.3 PP100 in 2010.
Furthermore, the incidence of all tire problems measured in the study has declined over the 5-year span, with the largest improvements in fast tread wear (4.4 PP100 improvement); slow leaks (2.6 PP100); and uneven wear (2.3 PP100).
The study measures tire owner satisfaction in four vehicle segments: luxury, passenger car, performance sport and truck/utility. Satisfaction is examined in four factors: tire wearability; tire ride; tire appearance; and tire traction/handling. Rankings are based on owner experiences with their tires after 2 years of vehicle ownership.