tyre pressure

[kenmaine1008]

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...

yeah.. totally agree!!! let's gain more knowledge and opinions 

[LatioR]

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

yes, u r rite. Hv tried on both stock as well as new tyres now, but will not pump too high shd the tyres' thread already worn up and abt time to change.

[LatioR]

yeah.. totally agree!!! let's gain more knowledge and opinions 

ya lor! working already so pressurize, hence shd make this forum more friendly then.

[Silver]

come for the monthly meet-ups and chill ....................

[burnolise]

come for the monthly meet-ups and chill ....................

So unfriendly here....dun dare to show face....

[fickle]

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)

any reliable brand?  get from where?...

[Ying]

dont buy those pen type, get those with round shape with needle readling type. Autobac Ubi sell at  ~$13.

[liewks]

Stock, Front 300, Rear 250. Bumpy. But just pretend that my tyres are low profiles.

I inflate my spare tyre with a bicycle pump to 300kPa. It's more convenient and doesn't take very much effort, plus it has a built in pressure gauge that happens to be accurate.

Higher pressures mean less sidewall deformation and therefore less heat generated while running at highway speeds.

I don't really feel any loss in traction due to a reduction in contact patch size. But then, I drive more for economy than to pull G's. Tyre wear is very even across the tread. Hopefully, they'll be good for another year. Aim is to reach 10yrs on 3 sets of tyres.

[trenat]

noob here with a quick question. is there a need to change tyre pressure if changing rim size and tyre size? if yes then by how much? thanks everyone!

[trenat]

for those looking for great information go check out http://www.carbibles.com/tyre_bible_pg2.html. of course this may be nothing new already but just a sharing on this thread since there's no mention of it.

*interesting point for me was the 10% Theory that Chris is now applying to his own tyres

"What's the "correct" tyre pressure?

How long is a piece of string?
Seriously though, you'll be more likely to get a sensible answer to the length of a piece of string than you will to the question of tyres pressures. Lets just say a good starting point is the pressure indicated in the owner's manual, or the sticker inside the driver's side door pillar. I say 'starting point' because on every car I've owned, I've ended up deviating from those figures for one reason or another. On my Subaru Impreza, as outlined above, I got much better gas mileage and no difference in tyre wear by increasing my pressures to 40psi. On my Honda Element, I cured the vague handling and outer-tyre-edge wear by increasing the pressures from the manufacturer-recommended 32/34psi front and rear respectively, to 37psi all round. On my Audi Coupe I cured some squirrelly braking problems by increasing the pressure at the front from 32psi to 36psi. On my really old VW Golf, I cured bad fuel economy and vague steering by increasing the pressures all-round to 33psi.
So what can you, dear reader, learn from my anecdotes? Not much really. It's pub-science. Ask ten Subaru Impreza owners what they run their tyres at and you'll get ten different answers. It depends on how they drive, what size wheels they have, what type of tyres they have, the required comfort vs. handling levels and so on and so forth. That's why I said the sticker in the door pillar is a good starting point. It's really up to you to search the internet and ask around for information specific to your car.
The Max. Pressure -10% theory.

Every tyre has a maximum inflation pressure stamped on the side somewhere. This is the maximum pressure the tyre can safely achieve under load. It is not the pressure you should inflate them to.
Having said this, I've given up using the door pillar sticker as my starting point and instead use the max.pressure-10% theory. According to the wags on many internet forums you can get the best performance by inflating them to 10% less than their recommended maximum pressure (the tyres, not the wags - they already haves inflated egos). It's a vague rule of thumb, and given that every car is different in weight and handling, it's a bit of a sledgehammer approach. But from my experience it does seem to provide a better starting point for adjusting tyre pressures. So to go back to my Subaru Impreza example, the maximum pressure on my Yokohama tyres was 44psi. 10% of that is 4.4, so 44-4.4=39.6psi which is about where I ended up. On my Element, the maximum pressure is 40psi so the 10% rule started me out at 36psi. I added one more to see what happened and it got better. Going up to 38psi and it definitely went off the boil, so for my vehicle and my driving style, 37psi on the Element was the sweet spot.
The other alternative - don't mess with your pressures at all

So - raising the pressure can extend a tyre's life because there is now less rubber contact with the road, the tyre is stiffer and therefore heats up less so lasts longer and less friction with the road gives greater MPG. Also, less sidewall flex will give a more positive feeling of steering accuracy but it can result in less ultimate grip and sudden unexpected loss of grip at the limit of adhesion. Raising or lowering tyre pressures too much either side of manufacturers recommendations could be at the expense of a less safe, more uncomfortable vehicle. So should we take all vehicle manufacturers recommendations as being absolutely correct? Remember that thousands of hours go into the development and testing of a car. If you've dicked around with your tyre pressures and still don't think it's right, go back to the door pillar sticker and try that again - you could be surprised. "

[jliow]

dont buy those pen type, get those with round shape with needle readling type. Autobac Ubi sell at  ~$13.

Daiso sell $2 nia

[Ying]

Daiso sell $2 nia

retail price or "friend friend" price? have pic? If $2 I want to buy a few as gift loh.

[jliow]

retail price or "friend friend" price? have pic? If $2 I want to buy a few as gift loh.

eh i think u living in some cave or something,....Daiso can sell fren price ah....?

[kenmaine1008]

eh i think u living in some cave or something,....Daiso can sell fren price ah....?

daiso everything oso $2