one very important thing... guys dont get air filled in frm the manual guage guys, the ones who have a dial or stick to check the pressure of air inside the tyre.they are ALWAYS wrong.i ve checked them for like 27000 times n everytime they pump in a lot more or less pressure then they though they did. once i got 30psi in all tyres but the ride got soooo hard as never before.then i went to a digital guage air filler n found that the damn guy had put 46-41 psi in all 4 tyres :@ always get air frm digital guages.
and one more thing, i u ever get a puncture on the tyre.wat the puncture wala usually do is that after repairing the tyre,they fill the tyre before putting it on the car.when the tyre is put on the car n the car is lowered down (when load is put on tyre) the pressure increases ... while u think u hav 30psi in the tyre, its actually sumwhere near 35psi.so always get the final dose of air after putting the tyre on the car.