Wipers and tires touch the road and the weather, so the safety logic holds. Asking an AI for the size is where the plan gets weak. It fits the car and ignores what decides wear: parked in the sun all day, highway kilometres, how much salt the region spreads. Both numbers are printed on the part itself. Load and speed index sit on the tire sidewall, blade length in the manual. Cheaper to read than to verify a guess.