i pumped 205kpa on 14 incher...

did went to patched up 1 rear tire coz it hits on a nail... the tire shop ppl sure refills de air pressure back rite... after a few days running, i went to petrol station to check tire pressure... whoa~ they pumped in 280kpa! then i release the pressure back to 205kpa and all 4 tires stick to 205kpa...

but everytime like after a week of running, all 4 tires will dropped on the pressure to 190kpa... all 4 4pcs! very consistent wan... hahaaa!

Normally tire shop will pump higher.

i pump 25psi for 195/50/r15 wor..cause above that..i feel my car very hard oh..

is it true that we should pump more pressure for the front tyre as most of our car is FF? my friend ask me to pump 230kPa for front and 220kPa for rear.
btw, i'm using 195x50xr15

the higher pressure is it, the bumpier it is...

better fuel consumption...
lighter steering feel....

catacombs, do you agree to pump 230kpa for front tyre and 220kpa for rear tyre (FF car)?
If yes, i will try next time.

I found the front tyre will get heat faster compare to rear tyre.
It's normal?

i pump front 32psi... rear 30psi...
afraid sudden loss of traction at the rear... haha....

if ur rear tyres are bloated with high pressure, less traction available at the rear tyres... ur tail end will tend to sway abit... if u love oversteer effect, give it a try lor....

yea, FF cars front tyres get heated up faster due to more wear n tear... because all braking and pickup stress to the front tyres....

so if i pump 25psi in 195/50/15..will the tire lifespan somehow become shortter??

some more u guys can pump up to 30++psi..for me..my ride will be like damn hard already..each hole i pass by..will feel like my wheel will come out anytime..is the car suspension problem or the tire problem ah??

it depends on what kinda tyre u using.... for soft wall tyres such as good year, its good to pump a bit higher pressure...

higher or lower tyre pressure can cause uneven tyre wear.... correct tyre pressure gives even tyre wear and good fuel consumption...

Im using 205/45/r16 tyres. I realised that the front tyres looks it does not have enough pressure even when i pumped in 35psi. Rear 32psi and they look fine. Is it because of the low profile tyres? The tyres are brand new though, less than a month old.

The shop fella says that it is because the front engine is heavier than the back.

I normally pump 235 kpa for my 195/55/R15 Silverstone Synergy M5 tyre.

Easier to turn steering wheel and car feels lighter when accelerating

Most FF cars and especially hatches typically have a very nose-heavy weight distribution.

This post has been edited by deodorant: Dec 30 2008, 12:26 AM

yeap.... dat is also the reason why i pump mine front 32psi... rear 30psi...

U put 25psi only if all u care about is comfort - which in the first place is mismatched priority (comfort is for 55 series above, 50 and below normally hard rock low profiles for handling)
u cant feel the road

but
shoulder wear on tyres is awesome..
fuel consumption also awesome..
$ to change tyres more often

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Added on December 30, 2008, 4:21 amNoprob lah difference is 5% only wat..
take note its for COLD tyres.. if u pump when hot add 20kpa to the cold ratings to compensate for air expansion otherwise its still underinflated

Depends on driving style.. for me i corner like gila wan so shoulder wear is quite high
compensate with higher pressure (280kpa on 195/55/15) cos i also do alot of highway cruising
end up even wear

This post has been edited by ceo684: Dec 30 2008, 04:21 AM

the tyre has soft sidewall should pump higher pressure

check tyres sidewall for max,min pressure u might put.

Also depends on individual, for me i stick to the Proton BLM manual book saying to pump 210kpa for the front wheels and 190 kpa for the back wheels ~

I also dun understand why until readong the_catacombs comments

Other reason that i heard is that it is to support the engine weight in the bonnet ~

Now pump 215 for front wheels and 195 kpa for the bac ~

datz why it is recommended to pump nitrogen... more stable...

of coz u dont pump until max pressure la...

is there any way to check the sidewall is soft or hard by ourself beside asking those tireman??

i usually pump higher if im going on a long journey on a highway.

a bit bumpy but i feel so much more smoother and my frm my observation, i consume lesser petrol but isnt that much. just that my steering is also lighter

if i come back to town, i'l use the standard recommended one coz of the potholes around

highway cruising - F 235 / R 220
normal town driving - F210 / R 190


i dont really do this that much coz of inconvinience. usually when im going outstation on a long trip, semangat abit.