Why do my Ariya tires need to be inflated every week? All four tires are losing air. I inflated them to 270 kPa, but after a week, they're only at 250-260 kPa.

I am too.

I have a 2.3 tire pressure, but I don't feel any difference while driving.

I haven't really added air yet. [I want to be alone]

In autumn, around October when the temperature is about ten degrees Celsius, set the cold tire pressure to 2.6. This way, even if the temperature drops, it's fine. When summer comes and it's around thirty degrees Celsius, set the cold tire pressure to 2.6 again. Remember, tire pressure can be a bit higher, but make sure it's not underinflated. It's not just about comfort; insufficient tire pressure is a safety issue.

The weather is getting colder.

Indeed, the patched tire is leaking quite a bit. [I need some time alone]

Me too.

Indeed, this car loses air quite quickly. Under normal driving conditions, I have to refill the air once a month.

There can be a variance in tire pressure between cold and hot tires, sometimes as much as 0.2 or more. When you inflate the tires at a station, they might show 2.7 when hot. After parking in the garage overnight, the next day it could drop to 2.6 or even 2.5. Also, tire pressure decreases as the temperature drops. This is normal. If your car has a tire inflator in the back, or if you buy a Xiaomi inflator, it's more convenient. Generally, when moving from spring to summer and temperatures rise above 30 degrees, inflate to 2.8. After summer, as temperatures drop and rarely exceed 30 degrees, inflate to 3.0. For your reference?

Yes, yes, I feel the same way. I always carry an air pump with me and need to use it every few weeks.