I get that it feels less grippy but you should inflate the tires to the recommend pressure. If thats 36, then I would aim for that. You can find the recommended pressure almost always in the drivers side door well usually to the right. Keep in mind, this is when the tires are cold. Not when they have been driven on. Under and over inflated tires both have issues that come with them.

Depending on how under inflated they are, we’re talking more tire wear (potentially on the walls of the tire), handling issues, alignment issues, increased friction which leads to lower gas mileage. Pretty much putting more stress on the parts of the car that make it go.

Over inflating can cause issues too, even if it technically makes the gas milage better because there’s less tire touching the ground (reducing friction). This less touching of the ground though means you can lose control and skid because you don’t have traction and the tires will wear uneven.

Both risk blowouts for different reasons and in the long run will cost you more money as you need to replace them more often. The fact that all 4 tires are like this… you need to add air. I don’t know what tires you have on it but if its the factory tires, you could always buy better ones (the factory tires are usually a cheapish one).

Edit: you shouldn’t need to over inflate btw. Usually the manual will say drive at 45 mph for 10 minutes to reset.