OEM recommended psi is based on specific load like passenger and luggage weight and its distribution .
I exceed Avanza OEM recommended 31 psi front and 35 psi rear by selecting 40 psi for its fuel economy and agility (aka power) .
44 psi gave me too harsh a ride hence settling at 40 psi for relative comfort .

Note:These 40 and 44 psi readings are all permitted by tyre manufacturers .

This post has been edited by zeng: Oct 25 2020, 02:20 PM