whats the proper tire pressure???

[desertfox65]

Re: whats the proper tire pressure???

Use this website to convert bar - kpa to psi.

btw 2.0bar is 200kpa or 29psi

Pressure Unit Converter

 

[Roasty]

Re: whats the proper tire pressure???

on my 18" CSC2.. front 230kpa, rear 240kpa
rides nice, not too hard.

 

[Terry]

Re: whats the proper tire pressure???

dont have lah..making up stories only..

 

[phil]

Re: whats the proper tire pressure???

Use this website to convert bar - kpa to psi.

btw 2.0bar is 200kpa or 29psi

Pressure Unit Converter

i knew someone would do that, i just guessed.

anyway, you all do what you want, i will be using 35psi.:nehnehhh:

 

[Batam Man]

Re: whats the proper tire pressure???

woooo 40 psi is wayyyyyyyyyy too much

35psi absolute maximum

If i pump 40psi into my 18', my tires will burst once hit the many deep pot holes in Batam roads :yikess:

 

[phil]

Re: whats the proper tire pressure???

If i pump 40psi into my 18', my tires will burst once hit the many deep pot holes in Batam roads :yikess:

you are the smartest person on this forum.

 

[acupunch]

Re: whats the proper tire pressure???

Sorry but I think these shops got it all wrong. South East reccos me to pump 300kpa all round on 235/35/19:screwedu: . Thats the max limit boss:yikess: .

PML reccos 2.0/2.2 bars(whatever that translates to in kpa) nia

lyneous... isnt 40psi all round too much? i was thinking 36 front 38 rear...

im running on 245/30/20 and 295/25/20 .... anyone using this size can give me feedback ?

I'm just sharing what I was told by Leong Seng, Kelvin, when I put on those MEs. don't take it is recommend defactor thingy. if you look closely onto your tires wall for the fine prints. most tire had max load psi/kpa and treadwear info.

I've just came back from stamford tire @ bukit batok , I did asked 'Ah Kheong'. He said 40psi is recommended cos my low profile tires. higher psi can prevent wheel dent. but he never say better handling nor better tire wear. afterall, I did drive 38/40 pressure for quite sometime now. nothing bad really. corner is good. high speed is good.

I had DC5 friend who track his car, his on 32/33 when is cold. warms up, 34/36.

anyway I really can't tell much a differences of 36 or 40. my butt just not that sensitive. is your ride you listen, you decide.

 

[acupunch]

Re: whats the proper tire pressure???

2.0 bar is 240kpa or 35 psi

I will say this for the last time

DO NOT pump more than 35psi. You will get uneven wear in the centre of the tyre, more road noise, less grip, less front end feel and harsher ride. Never put a different amount in front or rear, always the same. If you are anal, 33psi is optimum.

Terry since when do you have 20's?

i knew someone would do that, i just guessed.

anyway, you all do what you want, i will be using 35psi.:nehnehhh:

phil, I had to disagree with you. it shouldn't be one pressure fits all kinda of thoughts. different profiles and sizes contribute to pressure needed for the each set up. I think side wall compound plays a part too.

 

[T6]

Re: whats the proper tire pressure???

Guys, go to our local vag forum, search using key words "tyre pressure". There are some interesting discussion there. My own take is that if you pump too low, your sidewall gonna wear out. Pump too high and the centre of the tyres gonna wear out and it is much easier to lose traction.

 

[Jadis]

Re: whats the proper tire pressure???

Why not just follow BMW recommendation, front 220kpa and rear 250kpa.Tyres 225 and 235, 255 and 265 not much different!
For myself a bit kia su, I put 225 front and 255 rear, extra 5 kpa for both.

 

[phil]

Re: whats the proper tire pressure???

T6 and I are the only ones who understand

Ah chu, dont listen to my suggestions, im only an automotive engineer by trade with 25 years experience in show car builds, hot rod and custom car builds, race car and race boat builds and team mechanic experience. I have people waiting on me back home to help them with their engine builds, they only let me touch it. I am also an ex motocross racer, tyre pressure is one of the single most important thing in any form of vehicle. If you put 40psi, your life is at risk, as is those of your family. Go ahead and pump 40.

 

[Jadis]

Re: whats the proper tire pressure???

I would agree tyre pressure at 40 is dangerous! Wonder why Leong Seng suggested that? Lyn, please be careful.

 

[SHAMELESS]

Re: whats the proper tire pressure???

T6 and I are the only ones who understand

Ah chu, dont listen to my suggestions, im only an automotive engineer by trade with 25 years experience in show car builds, hot rod and custom car builds, race car and race boat builds and team mechanic experience. I have people waiting on me back home to help them with their engine builds, they only let me touch it. I am also an ex motocross racer, tyre pressure is one of the single most important thing in any form of vehicle. If you put 40psi, your life is at risk, as is those of your family. Go ahead and pump 40.

you slut!!!!!!!! stop talking cock here and return my fur jacket.........

 

[phil]

Re: whats the proper tire pressure???

you slut!!!!!!!! stop talking cock here and return my fur jacket.........

you return my white knee high socks and brown shoes first

 

[SHAMELESS]

Re: whats the proper tire pressure???

you return my white knee high socks and brown shoes first

bullshit, u gave those to me in exchange for my checked pants and red turban...... stop talking tyre pressure shit here. u know nothing abt PSI and i want my fur jacket back!!!!

 

[acupunch]

Re: whats the proper tire pressure???

T6 and I are the only ones who understand

Ah chu, dont listen to my suggestions, im only an automotive engineer by trade with 25 years experience in show car builds, hot rod and custom car builds, race car and race boat builds and team mechanic experience. I have people waiting on me back home to help them with their engine builds, they only let me touch it. I am also an ex motocross racer, tyre pressure is one of the single most important thing in any form of vehicle. If you put 40psi, your life is at risk, as is those of your family. Go ahead and pump 40.

I understand you had good experience and resume in racing cars and whatever other racing sports. still none of your experience uses low profile like our street used profile. most are on 40/45 tire wall (correct me if I'm wrong). I've little experience with bike too. both my Harley Fat Boy & BMW R1150RT pump 38-40psi on the rear. like i said before, tire pressure is subjective to tire wall, material or compound and load of the vehicle. I've never said 40 is good for anything. just that those are info from a tire shop. all i trying to say is it shouldn't be one single 34psi me the all size will follow. again is your/my car, we put whatever we confident with.

I would agree tyre pressure at 40 is dangerous! Wonder why Leong Seng suggested that? Lyn, please be careful.

if you read your tire pressure matrix diagram by your door, Rear 255/30/19" on 4pax+luggage load, recommendation for your rear pressure is 310kpa = 44.9psi. go tell BMW engineer that they are crazy. mind you those should be recommendation for run-flat tire spec.

ok, let's back to terry's queries, 20" low profile tire pressure.

 

[centurion]

Re: whats the proper tire pressure???

310kpa... oh my god. That's like balloon!

I fill mine 270kpa on my rears the station attendant look at me stupid already. But handles real good at the recommended pressures.

 

[acupunch]

Re: whats the proper tire pressure???

310kpa... oh my god. That's like balloon!

I fill mine 270kpa on my rears the station attendant look at me stupid already. But handles real good at the recommended pressures.

well! that what said on that tire pressure diagram sticker by the side of my driver's door. I'm not gonna try 310kpa on 4pax+luggage (full load).

 

[phil]

Re: whats the proper tire pressure???

its like talking to a brick wall.

 

[Shaun]

Re: whats the proper tire pressure???

Max recommended pressure for full load of people and luggage is still safe. Without those loads you can go slightly higher even. I know people personally that go high side to 44 psi and ever have a problem or uneven wear logging thousands of miles on some pretty bad road too. I go to 40 with no problems. It is true grip is reduced somewhat, but I've never needed a lot of grip on public roads. I like the mileage I get from it. Better in the rain too.

I agree with acupunch that there is no fixed rule and depends on a range of factors. Pressure in itself within the limits stated by manufacturer (tire and car) is fine. You're more likely to blow a tire up from under inflation since you're putting more heat into the tire from tire deformation and increase in patch friction.