What is the 4 psi rule?

Related questions

1. What are the units of a Kilopascal?
2. What is the basic unit of Pascal?
3. Should I fill my tires to max psi?
4. How much does tire psi go up after driving?
5. What does GPa units mean?
6. Should I fill tires to max psi?
7. What is GPa unit?
8. Why vacuum is measured in mmHg?
9. How many pounds is a Kilopascal?
10. What measurement is kPa?

Tags

1. #vehicle
2. #general
3. #pressure
4. #bitumen
5. #tyres
6. #inflate
7. #following
8. #passenger
9. #placard
10. #recommended
11. #applies