Timed saved is the most noticeable. But...
The thing is, the cold tire pressure is the pressure that allows for increased pressure at higher operating temperatures without compromising the tire and keeping the tire pressure in an acceptable range across a wide range of temperatures. But the optimal pressure tends to be at less than highway speeds and temperatures. When you pull off the highway and drive at considerably slower speeds, the pressure is still within the acceptable range, but not necessarily the optimal pressure. It's somewhere in the middle. You'd have to stop and pressurize for the different driving conditions every time those conditions change.
Because nitrogen runs cooler and causes the pressure to vary less within the wide range range of temperatures, the tires stay closer to the optimal pressure more of the time. Fill the proper cold tire pressure and things are more or less automatic. It helps especially with the widely varying altitudes and temperatures expediters encounter. A day or two out west or in the mountains while run running with are really needs a tire pressure adjustment. But not necessarily with nitrogen.
So, you save time having to check and fill tires all the time. They stay closer to the optimal pressure over a wider range of operating conditions, which means better tread wear and fuel economy.
Generally, most vehicles realize about a 20% increase in tread wear and improved fuel economy. $50 is nothing compared to 20% linger tread life.
The thing is, the cold tire pressure is the pressure that allows for increased pressure at higher operating temperatures without compromising the tire and keeping the tire pressure in an acceptable range across a wide range of temperatures. But the optimal pressure tends to be at less than highway speeds and temperatures. When you pull off the highway and drive at considerably slower speeds, the pressure is still within the acceptable range, but not necessarily the optimal pressure. It's somewhere in the middle. You'd have to stop and pressurize for the different driving conditions every time those conditions change.
Because nitrogen runs cooler and causes the pressure to vary less within the wide range range of temperatures, the tires stay closer to the optimal pressure more of the time. Fill the proper cold tire pressure and things are more or less automatic. It helps especially with the widely varying altitudes and temperatures expediters encounter. A day or two out west or in the mountains while run running with are really needs a tire pressure adjustment. But not necessarily with nitrogen.
So, you save time having to check and fill tires all the time. They stay closer to the optimal pressure over a wider range of operating conditions, which means better tread wear and fuel economy.
Generally, most vehicles realize about a 20% increase in tread wear and improved fuel economy. $50 is nothing compared to 20% linger tread life.