Quote:
Originally Posted by KGM
But strangewierding - my 17" set (exactly the same size - 225/45R17):
the tyre workshop advised me to inflate them directly to 2.8bar (40PSI) -
as a lower profile tyre needs a higher pressure to compensate ...
|
That's because it is the air that holds up the car, not the tire. So, the lower the profile, the less volume you have. The less volume the more pressure for the same amount of air. Heavy truck tires inflate even higher.