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Correct Tire pressure...


Mikee
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Neutral Newbie

Hi all, my ride is Sunny 1.6 (Tire is BS GR80) 14". Sticker in car state that Front: 2.3/33 Back: 2.1/30 . I'm not too sure how to translate the meaning. I pumped '210' for all 4 tires, is it correct?

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2.3 is bar reading

33 is psi reading

 

your case 33 psi = 220kPa... [thumbsup]

 

psi KPa BAR Atm

1 6.8948 0.06895 0.06805

post-7-1160814075_thumb.jpg

Edited by Paffendorf
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Neutral Newbie

Ahhh...thx for the info! I noticed that if I pump 210kpa for my front tires, they are like slagging (like not firm...).

 

Will try pumping Front: 230kpa and Back: 210kpa...

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So now got information liao... better pump 225 for front and 230 for back...

ya know some pump are in different pressure...so make sure u bring along your measurement tools... [thumbsup]

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[rolleyes]

 

Pump more In front , Your Car No need Power Steering Liow...... (Floating On High Speed)

 

Like the wheel not touching the Road........ [gossip]

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Don't expect high accuracy from public free of charge air pumps. Have come across car owners using very cheap ( toy-like stuff) tyre gauge trying to check the tyre pressure but apparently every reading taken is far from satisfactory.

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Actually I'm curious about something. If having a slightly higher pressure for the front causes it to have less traction and be more unstable, then why does the sticker on the car specify it to be so?

 

So are we still supposed to follow what is given on the sticker?

 

Are we also supposed to stick to what is given on the sticker regardless of any change in tyres, incl width and profile?

 

Thanx for enlightening me!

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i didn't bother.. i'm driving subaru TS and i pumped 230 for front and back..

it's best to pump when ur wheels are cool.. not after running the whole day..

Edited by Prodigysaint
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[reply]

I know that. But some say you should have a lower tyre pressure for the front for better stability. So to have lower pressure in front or not?

I believe front (for front wheel drive) should be higher pressure, cos not enough pressure the tyre will flex and won't give better stability. Furthermore during hard cornering or emergency stopping, the weight of the car is transfered to the front wheel more, so sufficient pressure (hardness) is important to give better control of the vehicle.

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rolleyes.gif

 

I always pump 200 thumbsup.gif

 

Is that your vehicle's recommended pressure to pump? Cos I feel its a bit low...

 

I pump 235 kpa front and 225 kpa rear on my corolla G6, and the wear pattern is very nice and even on the tyre, so should be rather close to the corret pressure, I guess.

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Ahhh...thx for the info! I noticed that if I pump 210kpa for my front tires, they are like slagging (like not firm...).

 

Will try pumping Front: 230kpa and Back: 210kpa...

=====================

 

Try not to go by the bulge of the tyre although it is tempting to pump more if u see the bulge like too much.

 

Follow the recommended tyre pressure for your car & tyre to b safe cos too high or low pressure will affect the handling & braking distance of your car.

 

Many pple tend to pump higher cos then their car feels "lighter" & more powerful or better FC but it is very dangerous.

 

U can increase/decrease abit (abt 5 to 10kpa) but not too much.

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Front got engine mah so heavier lor

======================

 

My car is front engine & front wheel drive but tyre pressure for front & rear tyres is the same. [dizzy]

 

1 reason cud b it has good weight distribution? [confused]

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Funny thing is my car recommends 190kpa front & rear?

 

But I pump abt 200kpa cos at 190, the outer edges of the tyres wear out faster. My tyre shop pumped 230kpa for me but I found it too hard & bumpy & the steering gets too light.

 

I remember once I had my tyres balanced at Stamford & the guy pumped 280kpa for me. [sweatdrop][sweatdrop][sweatdrop][sweatdrop][sweatdrop]

 

I think he got some mental problem. [dizzy]

Edited by Pisces69
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On the other hand I also hear that slightly underinflated tyres give better traction as there is more contact with the ground. Of course, if too much it just contributes to instability due to flexing of the sidewall.

 

Seems like there are two schools of thought regarding this. So which should be the appropriate way?

 

And is tyre pressure supp to remain the same even if you upsize your rims and tyres?

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I think you have to see the weight of your car, the size of the tyres and the profile ya?

For me, i just pump 230 front and rear...was at 235...felt no diff...maybe the meter at the petrol station not accurate anyways...

but i do think the front should be more...just too lazy to readjust hte pressure for front and rear at the station..

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