Tire pressure...what are you running?
#1
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My Ride: 545, Auto, Sport, L7, Pdc, Sunshades, Silver Gray/Black, 19x8.5/9.5 Monet Wheels, Michelin PS A/S Tires, Full M-KIt, B&B Exhaust, 20% Llumar Tint
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Curious if any of you have played around with the tire pressure and come up with something that you like better than what is listed in the manual. I'm running the staggered 124's so I'm most interested in what others with the same set-up have to say.
TIA
TIA
#3
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Remember to use anything but the equipment at a petrol station or likewise to measure your pressure ![Wink](https://5series.net/forums/images/smilies/imported/wink.gif)
The ideal thing is a digital device, which is very likely to be correct, and you'd always be using the same unit to measure your pressure.
-paasan
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The ideal thing is a digital device, which is very likely to be correct, and you'd always be using the same unit to measure your pressure.
-paasan
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In addition to paasan's tips, don't forget that tire pressures need to be checked "cold".
If a tire is driven just a short distance, it will build-up heat and the pressure will rise.
If you have to drive the car to a gas station to get air, take pressure readings on all four tires before you move the car. Write down how many pounds each tire is low then drive to the station. Once at the station, check the pressure again before adding any air. You still need to add the number of pounds you wrote down to each tire.
For example, if your target pressure is 36psi and a tire was reading 35psi when cold, you're goal is to add one pound. If same tire that read 35 cold now reads 37 at the gas station due to the increase in tire temperature, you still need to add one pound and bring it up to 38. Once the tire cools, the pressure will be back down to the target 36.
I'm sure many of you already knew this but I figured it can't hurt to remind everyone!
If a tire is driven just a short distance, it will build-up heat and the pressure will rise.
If you have to drive the car to a gas station to get air, take pressure readings on all four tires before you move the car. Write down how many pounds each tire is low then drive to the station. Once at the station, check the pressure again before adding any air. You still need to add the number of pounds you wrote down to each tire.
For example, if your target pressure is 36psi and a tire was reading 35psi when cold, you're goal is to add one pound. If same tire that read 35 cold now reads 37 at the gas station due to the increase in tire temperature, you still need to add one pound and bring it up to 38. Once the tire cools, the pressure will be back down to the target 36.
I'm sure many of you already knew this but I figured it can't hurt to remind everyone!
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Funny about petrol air gauges... I was in Australia last year with a rental Z4 when I had a flat tire warning...
Seemed like an anomily (it was) yet I stopped in at gas stations every 100 miles or so to check and see if I really did have a flat... Well suffice to say, most gas stations down under have air systems where you ENTER the pressure you want. It will bleed off excess and ensure it tops to that pressure. Checked it with a real gauge and it was always just a little off or accurate. Which you can't say at petrol stations in the US or Europe where it's LOADS off.
Seemed like an anomily (it was) yet I stopped in at gas stations every 100 miles or so to check and see if I really did have a flat... Well suffice to say, most gas stations down under have air systems where you ENTER the pressure you want. It will bleed off excess and ensure it tops to that pressure. Checked it with a real gauge and it was always just a little off or accurate. Which you can't say at petrol stations in the US or Europe where it's LOADS off.
#6
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I carry an accutire guage, check pressures weekly or more often if any trips .....its DEAD on the money (checked against a calibrated guage) and it was only ?5 in costco a few years back.....hell, it even lights up in the dark.........Hows that for good value?
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Originally Posted by Rudy' date='Jun 3 2004, 07:31 AM
If you have to drive the car to a gas station to get air ...
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#9
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And guess what.. just now we got one more warning about a "Tyre puncture" from the RPA. Seems none of the tyres differentiate in pressure from what they are supposed to be at - i'll have one more check now whenever the tyres cool down.
It's probably our 6th or 7th incorrect warning in just 2000-3000km - wonder how that'll be this summer on our 8000km trip
Probably slightly confusing when traveling along the Autoroute and Autobahn. These errors turns the RPA system completely useless - while driving it's impossible to tell if there is an actual puncture rather than a software error.
The dealer has also tried to correct the error twice through software updates - but the error seems more like a failure in the fundamentals of the RPA monitoring algorithm rather than a HW malfunction. Anyone else experiencing frequent RPA warnings?
-paasan
It's probably our 6th or 7th incorrect warning in just 2000-3000km - wonder how that'll be this summer on our 8000km trip
![Smile](https://5series.net/forums/images/smilies/imported/smile.gif)
The dealer has also tried to correct the error twice through software updates - but the error seems more like a failure in the fundamentals of the RPA monitoring algorithm rather than a HW malfunction. Anyone else experiencing frequent RPA warnings?
-paasan
#10
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Originally Posted by paasan' date='Jun 3 2004, 07:58 PM
And guess what.. just now we got one more warning about a "Tyre puncture" from the RPA. Seems none of the tyres differentiate in pressure from what they are supposed to be at - i'll have one more check now whenever the tyres cool down.
It's probably our 6th or 7th incorrect warning in just 2000-3000km - wonder how that'll be this summer on our 8000km trip
Probably slightly confusing when traveling along the Autoroute and Autobahn. These errors turns the RPA system completely useless - while driving it's impossible to tell if there is an actual puncture rather than a software error.
The dealer has also tried to correct the error twice through software updates - but the error seems more like a failure in the fundamentals of the RPA monitoring algorithm rather than a HW malfunction. Anyone else experiencing frequent RPA warnings?
-paasan
It's probably our 6th or 7th incorrect warning in just 2000-3000km - wonder how that'll be this summer on our 8000km trip
![Smile](https://5series.net/forums/images/smilies/imported/smile.gif)
The dealer has also tried to correct the error twice through software updates - but the error seems more like a failure in the fundamentals of the RPA monitoring algorithm rather than a HW malfunction. Anyone else experiencing frequent RPA warnings?
-paasan
When my car went in for upgrades, the dealer over here took off the metal ones and never put anything on the valves!!
![Angry](https://5series.net/forums/images/smilies/imported/angry.gif)
Cheers.
Kiran.