How much air to pump in???

[Kelkel]

Hi, juz like to check with you guys, how much air to pump in for this size tyres??195/50/R15???tks for the adivce...

[Kax2]

usually 210

[Kanr]

The range will be etween 200-250,thks!!!Cheers!

[Gadgeter]

you can pump 210 or 220.

 

If you pump 240, you will find that the ride gets a bit bumpy.

[Octopus]

Me having the same size tyres as yours. I usually pump 240 front and 225 rear, but I pump when its hot (after traveling for >5km).

[N00b]

y do u pump different amts for front n back??

[Octopus]

Cos the front is heavier than the rear in most car, as that's where the engine is located.

 

Moreover, especially when emergency braking, most of the weight will be on the front tyre, so its better to have a 'stiffer' front tyre.

[Skin711]

then why pump when its hot? Thxs.

[Octopus]

Actually to get the true (correct) pressure, better to pump when cold. This is easier if your home/workplace is near petrol kiosk.

 

Alternately, can pump a bit higher pressure, and then adjust (release air) to the correct pressure when the tyre had cooled down using a tyre pressure guage.

 

I pump when hot, so agar-agar the correct pressure will be slightly lower than the pressure I had pumped in. The nearest petrol kiosk is 7 km away from my work place, and I usually pump on my way home.

[Tankm]

Over-inflat tyres will not help in braking...infact it will be worst.

[Octopus]

How much would you consider to be over-inflating?

[Kawan]

Follow the label on the car lah ... even if your tyre may be a little bigger than the original. The measurement that we talk about is for air pressure not air volume ... so i think it does not mean bigger tyre need higher air pressure. That's my assumption, expert reading this pls let me know if i am wrong.

 

For me the label said 220 for front, and 210 for back. So i pump 230 for front and 220 for back when it is cold ... because i think some air will come out when i disconnect the pump (can hear the sound). I will try 225 and 215 next time since it is a little bit more bumpy.

 

There is one time i pump after a long drive ... the reading show > 230 for all tyres, so the result is some air released, and when it cools down, the tyre feel very flat .. so i had to rush to a nearby petrol station to pump the next morning.

[Protege]

How about 195/55/15? Tyre shop say 230. But dunno whether can trust or not.

Edited September 21, 2005 by Protege

[Gadgeter]

do a test.....

 

try pumping 230, drive for a week, then 220 for a week..

[Fcw75]

I am using the same size as you. I pumped 230 for front and 220 for rear. The front a bit more coz the engine in front...

[Shiwao]

mine's 185/55/15. i pump all 230psi

 

so far so gd, no problems so far.

[Protege]

Will do the test!

[Protege]

Will try that out! Thanks bro!!