Quote:
Originally Posted by mikephoen
Those stopping distances look way too long. On the consumer reports website, for 2021 vehicles, they found the average stopping distance at 60MPH for all vehicles was 132 feet. The sportscar category averaged 120 feet and the large SUV category was the worst at 143 feet.
Source: https://www.consumerreports.org/car-...s-a2960086475/ |
- ignores reaction time and physical foot movement
- brand new car, brand new brakes
- presumably brand new tires, optimally inflated (I also wonder if they use summer tires, which would definitely stop faster than all-seasons, too)
- no additional passengers or cargo (presumably a driver and telemetry rig? not sure on their exact methodology)
- brake application probably isn't typical of real world driving...I'm guessing they slam down 100% and let ABS sort it out (which an actual driver may/may not actually do)
- perfectly flat and clean test track
I'm sure the graphic I posted is on the high side, but when you start factoring in real-world variables the consumer report link is meaningless for anything other than comparing between cars.
Regardless of the exact distance, 30kph stopping distance is going to be roughly half of 50kph (which will be about 45% shorter than 70kph, which will be about 40% shorter than 90kph, etc.)