tyre pressure

[clarence]

Bro,

You pumped 280 when cold, it may reach more than 300kpa when hot. Becareful, take it as a sound advise. You can see why some encountered burst tyres on NSHW.   

250KPa is already more than enough on the extreme end.

[Silver]

had been on 280 kPa (hot) for the last month or so
maximum stated on tyre sidewall is 300 kPa (cold)
FC = 13+ kpl

[clarence]

had been on 280 kPa (hot) for the last month or so
maximum stated on tyre sidewall is 300 kPa (cold)
FC = 13+ kpl

That is just a guideline, bearing in mind that there are variations in different pumps.

[Silver]

maximum pressure stated on the tyre sidewall is stamped by the tyre manufacturer

[Jazz]

250KPa is already more than enough on the extreme end.

This is based on your Clarence' theory ?

[LaChio]

eh.. sorry.. wat do u guys meant by hot and cold?

'Hot' means you pump when the tyre is hot eg. after travelling for some time.
'Cold' means you pump when the tyre is cold eg. car parked at pumping station for few hours or overnight or you live next door to a petrol kiosk and go pump first thing in the morning.

Note: Pressure in 'hot' tyre is higher than that in 'cold' tyre, depending how 'hot' the tyre is.

[kenmaine1008]

'Hot' means you pump when the tyre is hot eg. after travelling for some time.
'Cold' means you pump when the tyre is cold eg. car parked at pumping station for few hours or overnight or you live next door to a petrol kiosk and go pump first thing in the morning.

Note: Pressure in 'hot' tyre is higher than that in 'cold' tyre, depending how 'hot' the tyre is.

oic.. means pumping when its hot is more accurate?

[Jazz]

oic.. means pumping when its hot is more accurate?

Nope, recommend to pump your tyres when cold. You can travel not more than 5km to your petrol station to pump air.

[pizzaboy]

how often do we need to pump our tyres if its nitrogen filled?
some say once a mth, some say once in 2 mths & some say the pressure would never drop so there is no need to pump... wonder which to believe?

[SoL]

Pressure will never drop is a lie, it'll definitely drop. Maybe you can pump after one month bah. Anyway our air is already 78% nitrogen, so it won't make much of a difference anyway.

[kenmaine1008]

Nope, recommend to pump your tyres when cold. You can travel not more than 5km to your petrol station to pump air.

oh.. okie thanks!~ 

[veefer]

how often do we need to pump our tyres if its nitrogen filled?
some say once a mth, some say once in 2 mths & some say the pressure would never drop so there is no need to pump... wonder which to believe?

I changed my tyres 2 months back and the shop filled it with N2, told me no need to charge for 3 months and they will do it for free. On my previous tyres, I would  religiously check my tyre pressures every weekend but for the new set with N2, I checked it after a month.

My findings were that the pressures dropped significantly and I should still check and charge my tyres every week.

Just for sharing....

[nzmg]

different station pump different calibration. So if u go to Caltex station pump 230, then drive to Esso, then u try u be shock the reading is 250. Then U drive to shell wah the reading is 210.

So stick to your regular pump.

SPC pump the most lao ya. Esso and Caltex quite ok, but caltex must see location.

I suggest that car owners buy a tire pressure gauge and keep in the car.

They are easily available, and are not expensive.  (in fact, some people find the cheap non-digital ones better then the relatively more expensive, digital ones)

[clarence]

This is based on your Clarence' theory ?

I don't understand what you are trying to imply on this. 

[Zippy]

I suggest that car owners buy a tire pressure gauge and keep in the car.

They are easily available, and are not expensive.  (in fact, some people find the cheap non-digital ones better then the relatively more expensive, digital ones)

Yup, i heard the exact same thing from a few friends - that the cheap gauges seem to be more accurate compared to the digital ones!

[Jazz]

I don't understand what you are trying to imply on this. 

Do you really understand your tyre spec again if you are driving. You mentioned 250kpa is already at the extreme end ? On hot or cold ? Some bros here already mentioned they pumped as high as 280kpa and max for toyo j50 is 300kpa on cold. So I ask is this your Clarence' theory ?

[LatioR]

hi all, i'm very comfortable with the 270/250 kpa now with fc ~14km/l. It has improved from my previous FC ard 12+km/l. At a start, u will feel bumpy but after awhile, it's OK then

[kenmaine1008]

hi all, i'm very comfortable with the 270/250 kpa now with fc ~14km/l. It has improved from my previous FC ard 12+km/l. At a start, u will feel bumpy but after awhile, it's OK then

270 for front and 250 for rear? does it matter if one is using stock or different types of tyres?

[clarence]

Do you really understand your tyre spec again if you are driving. You mentioned 250kpa is already at the extreme end ? On hot or cold ? Some bros here already mentioned they pumped as high as 280kpa and max for toyo j50 is 300kpa on cold. So I ask is this your Clarence' theory ?

I was referring to 250KPa when cold.

Pumping 280 to 300 KPa on a cold tyre could seriously compromise safety as the contact with the road is minised.

But to each his own. Everyone has their rights to pump 300KPa. It sure does help in saving some fuel.

NEVER over my dead body would I pump 280 to 300 KPa. One's life is worth more than that few dollars in savings for a full tank of petrol.

[burnolise]

Clarence bro and Jazz bro....what's with the agression and unfriendliness?? There is no need to get all agressive over opinions, suggestions and advises given here....i think all other forumers here are not idiots....they all know that all opinions, suggestions and advises given here are for consideration only......no one will take it as a hard and fast rule to follow....so wat if u win in the shutting down the other forumer's from expressing his opinions and advises?? Does this mean tat from now on u r GOD and every other forumer from henceforth will abide by your advises and suggestions religiously?

Besides, we are all none the wiser...if we are so good....why are we not in some big company in some R&D lab doing tyre research? We are all only sharing our experience and opinions....

Best of all....you may think some are compromising safety by trying to save more $$$.....but those who did it....obviously after consideration have thought otherwise....and if some thing really happen, tough wood, he had himself only to blame.....to each his own.....we are all free to express our opinions and experience as we like....but no personal attacks please....this is one of my favourite forum....dun make it my most unfavourite one.....thanks...