[stevensonleehk]

Dear All,

Just wondering what sort of tire pressure you guys are running on HK's pot-hole filled roads?

I currently have a staggered setup of 17" 255 in the rear and 225 in the front. What sort of pressures will you recommend to achieve a balance of handling, fuel economy and comfort?

[little_croco]

I am using 32psi

[Amez]

Originally Posted by little_croco

I am using 32psi

Little_croco ching,
下次你試吓頭呔打多1匹，
轉向效果會d架。

[little_croco]

thanks. 呢幾日開始(真係)熱, 都應該會打多兩磅

[335iDCT]

But shouldn't tire pressure be checked under 'cold' condition?

[BimmerJack]

Originally Posted by 335iDCT

But shouldn't tire pressure be checked under 'cold' condition?

it never gets cold until end of December

[stevensonleehk]

but should the rear tires be of a higher pressure than the front tires on a staggered setup? or is that not necessary?

[trekker]

When I picked up my car from BMW, I think it was 28psi or 30 for the front 32 for the rear. I just pumped up the front to 32 as well, it feels quite a bit bumpier and feels the road more through the steer wheel.

[Wolfman]

Beware that extra pressure will reduce the tire's contact patch. Reducing the size of patch means decreased ride quality and may negatively impact the car's handling. Stick to the BMW's recommended tire pressure in most cases, unless if it's really hot like right now. I suppose a little extra air will not do too much harm, espeically in this heat. I was driving in NT yesterday and temp gauge reads 36 degrees celisus. I had a tire pressure warning sign on, the next morning add in some air and the car runs fine.

[little_croco]

Originally Posted by 335iDCT

But shouldn't tire pressure be checked under 'cold' condition?

u are absolutely right, but not too practical. at least I don't have the pump in my parking lot for my car has been idle and cold

[little_croco]

Originally Posted by stevensonleehk

but should the rear tires be of a higher pressure than the front tires on a staggered setup? or is that not necessary?

it is not due to staggered setup but the loading distribution (motion and idle) of the car in general.

[stevensonleehk]

Thanks little croco.

So what sort of pressures will you all recommend? And if I already have 17" 225s on my rear tires and 225s in my front tires, do I still need to have my rear tires at a higher pressure? I was under the impression that the differential pressures in the front and the back are for prevention of oversteer?

Maybe someone can help me clarify.

Thanks!

[335 Freak]

Originally Posted by stevensonleehk

Thanks little croco.

So what sort of pressures will you all recommend? And if I already have 17" 225s on my rear tires and 225s in my front tires, do I still need to have my rear tires at a higher pressure? I was under the impression that the differential pressures in the front and the back are for prevention of oversteer?

Maybe someone can help me clarify.

Thanks!

Not sure about others but I normally will do my rear around 2-3 PSI higher than the front!! As such, the back of the car feels like a big lighter which having the tendancy to swing a bit faster when driving fast in a tough turns....I like the rear to swing a bit during turns...indeed personal perference though!! Just pump a big higher these few days with my 19" set up pumped 33 PSI front and 36 PSI rear!! However, don't ever trusted the gas station's pump pressure meter but using your own meter to do the proper measures!!

As other folks mentioned, HK can never be pump at cold start unless you are parking your car in the gas station to check tire pressure in the morning....or having the pump in your own garage!!

[E92-Lighting]

just curious, is there a lot of pot holes in HK?

[superdx]

I would say roads are hit & miss, some are pretty nice, some are pretty bad

[little_croco]

road conditions will be the worst after heavy rains, like what we had two/three weeks back

[528imsport]

get nitrogen and you can have it at 33 front and 34 rear this is all round driving
for better handling the 32 front 33 rear

[528imsport]

Originally Posted by E92-Lighting

just curious, is there a lot of pot holes in HK?

not alot but 1000000s of them in HK and you will not find a good road in HK unlike the US which the road are so smooth

[528imsport]

Originally Posted by superdx

I would say roads are hit & miss, some are pretty nice, some are pretty bad

when you say nice it only last for a few secs
I wish the road last more than a few minis.
the road that is good but not long is the Disney road which is a good road to do 0-105km

[ct087ct087]

Originally Posted by pinguhk

not alot but 1000000s of them in HK and you will not find a good road in HK unlike the US which the road are so smooth

I think it depends on what/where is referring. The highway is quite smooth in HK and most of European countries. I didn't drive much in US but the highway from SFO to San Jose is definitely not smooth......of course, the road is much much better in downtown in US comparing to HK.

[Wolfman]

The highways here are ususally not too bad, it's the city streets that can cause problems. Particularly those used frequently by heavy trucks, they can wear out the roads pretty fast, causing potholes, cracks and other bumpy hazards.