tire pressure for 2007 325i sport

[B33mEr]

Bro, thanks for this useful info. :top: However, cars are designed to understeer precisely for the safety of the less competent drivers, because understeer is easier to control and less dangerous than oversteer.

Bro ... u just repeating what i said earlier But if the door card for e90 is 36 front and 40 psi rear then pls do what BMW says. But bear in mind please on the wet is whole different story due to the fact that the higher pressure will result in less rubber contact on the road which will result in a slight oversteer if not careful plus there's the issue of aquaplaning (pool of water) again if not careful can cause lost of control in a car if travelling >100-120kmh on a rainy day ... thus hence why i recommend for 34-36psi, it's rainy season summore ppl... just my 2 kupang

 

[JCKL]

Let your bottom be the sensor......I can tell that my car's tyres are under-pressured from the way it rides & handles, when they drop to about 30psi front and 33 psi rear.

 

[MSport]

I think the air pumps at most petrol stations are never calibrated since the day they were installed, which may be a decade ago when the station was built. Never rely on them to determine the pressure in your tires.

That is very true!:top:

 

[Juan Powerblow]

Let your bottom be the sensor......I can tell that my car's tyres are under-pressured from the way it rides & handles, when they drop to about 30psi front and 33 psi rear.

Yeah, same here. I usually require slight top-up after 2 weeks. The digital tyre pressure pumps at the Shell station opposite Eastin Hotel is not bad, quite accurate even when I counter check against my portable gauge.

 

[danc]

I need to top up every week. But then again I maybe a little to particular about tire pressure. The thing is there is air to top up every week and I can't imagine someone driving around for 10K km without topping up air. Sounds dangerous.

 

[MSport]

Yeah, same here. I usually require slight top-up after 2 weeks. The digital tyre pressure pumps at the Shell station opposite Eastin Hotel is not bad, quite accurate even when I counter check against my portable gauge.

Aha! This one quite OK. There are others which are NOT calibrated. Some even run by 20kPA!

 

[Silver320]

Today I tried releasing some pressure of one of my rear tyre, from 215 to 180 Kpa. Then drove off at up to 80km/hr but the OBC did not show any alarm. I thought there is an indicator to warn the driver when there is pressure loss??:dontknow:

 

[MSport]

Today I tried releasing some pressure of one of my rear tyre, from 215 to 180 Kpa. Then drove off at up to 80km/hr but the OBC did not show any alarm. I thought there is an indicator to warn the driver when there is pressure loss??:dontknow:

Bro, too little. You need to release more..... must be around 70kPa difference. Then you drive normally (can go faster than 80km/h) and your RFI alarm should be coming up.

Good luck! :top: