In the content manager, the air pressure is listed as 28 psi.
However, when I go in-game, the air pressure difference is 38 psi.
Up until this point, I had to think about a 10psi difference in the game and adjust it, but I think there will be a situation later when I have to ride with an air pressure that doesn't fit this car, so I'm going to take action before that.
If anyone knows a solution to this problem, please comment!!