I learned recently there is usually a sticker under the hood with the weight of refrigerant and oil to be put into the ac as well (really helped me in properly using a manifold gauge and pump on my truck)

I always read about what's printed on tires. 🤷

"Cold pressure". If you've driven the car, as you would to go get the tire pressure checked, the tires are no longer cold and you need to add 4 lbs to the pressure listed.

My friend had a tire that was almost completely flat the other day and this tip always comes in handy.

If you ever change your wheels or tires, is this sticker supposed to be changed or updated?

Does anybody adjust the tyre pressure due to weight in the car? Surely driving with larger weight in the boot would require a difficult psi/bar for the tyres?

Edit: great ysk post!

My cars all had this info under the gas cap. With details about number of people/load/comfort/economy.

Also if your car is German and the country you're in is not, you may find yourself in a situation where your car is bitching about tyre pressure but the only pump you can find at a petrol station is in PSI and the label is in Bar, and the only way you can convert those is to desperately wave your phone around like a madman trying to get some working internet while freezing cold in the rain. You might be well served by doing that conversion up front and writing it down somewhere.

Totally hypothetical situation, of course.

It isn’t always on the drivers side. It can be on the passenger side, sometimes front, sometimes rear… sometimes they put it in the glovebox - depends on the car manufacturer.

Source: used to work in tire shop.

So many people incorrectly think they should go by the number on the tire, not knowing that that number is the max that tire can hold, not the recommended pressure. Putting the max amount in prevents the tread from contacting the road flat, which will cause the middle of the tread to wear quicker than the rest. Same for too little pressure, but in this case the edges wear quicker than the middle. Using the recommended pressure for your vehicle ensures the tread is contacting the road evenly all the way across the width of the tread, and gets you the best gas mileage and treat wear.