Joined
·
246 Posts
I've been playing with the tire pressure on my 15 CTD with OEM tires. Have found that as little as 2 lbs in each can greatly affect mileage and ride quality/feel. Took delivery at 34 in all 4 which aggravated me and had to stop and get the recommended 38 in each one. Problem is, as soon as I drive, the pressure on the DIC shows 4-6 greater in each tire, making them feel " hard" .
So, what is my sweet spot based on fuel load, weather, passenger load etc.? I've found that starting each tire at 38 ( car at rest overnight in garage, cold tires ) is a little low. I went up 1 lb in each to 39 which within 10 minutes of driving takes them to about 42 on the DIC and this is where I feel the car does best without too harsh a ride and gives great mileage too on DIC. Went to 40 cold at rest and while driving it goes to about 44 which for me is a bit harsh.
whats your sweet spot?
So, what is my sweet spot based on fuel load, weather, passenger load etc.? I've found that starting each tire at 38 ( car at rest overnight in garage, cold tires ) is a little low. I went up 1 lb in each to 39 which within 10 minutes of driving takes them to about 42 on the DIC and this is where I feel the car does best without too harsh a ride and gives great mileage too on DIC. Went to 40 cold at rest and while driving it goes to about 44 which for me is a bit harsh.
whats your sweet spot?