Tyre pressure sensors
When I start a journey the front and rear pressures usually show the same reading. By the time I end my journey they often have 4 different readings. Is this normal?
One tyre started at 36 the other day and finished on 41 (that was the hottest day of the year though but it seems quite a big change)
One tyre started at 36 the other day and finished on 41 (that was the hottest day of the year though but it seems quite a big change)
Porsche Cayenne GTS, Quarzite Grey) (Nov 21) (Mine )
E-Mini (Oct 21) (Hers)
VW ID3 (May 23 local runaround) (Ours)
Porsche Macan GTS, Sapphire Blue, 2018 (sold )
E-Mini (Oct 21) (Hers)
VW ID3 (May 23 local runaround) (Ours)
Porsche Macan GTS, Sapphire Blue, 2018 (sold )
- Wing Commander
- Posts: 19922
- Joined: Tue Oct 06, 2015 5:43 pm
- Location: Wiltshire
As they warm up, on my car, they often move up a PSI at slightly different times. So at one point, they might be 30, 30, 31, 32 and then settle down to say 30, 30, 32, 32. On the same axle, they are not more than one PSI apart at any one time.
Simon
Sold: 2016 Rhodium Silver Macan 2.0
Sold: 2013 Platinum Silver 911 (991.1) C2
Sold: 2017 Carmine Red Panamera 4
Mine: 991.2 Carrera T Racing Yellow 06/04/2018
Sold: 2016 Rhodium Silver Macan 2.0
Sold: 2013 Platinum Silver 911 (991.1) C2
Sold: 2017 Carmine Red Panamera 4
Mine: 991.2 Carrera T Racing Yellow 06/04/2018
When I had new tyres (put on at OPC) the readings were all wildly different. I checked the with a pressure gauge - and they were all completely different. I thought that the OPC might make more effort to get them correct. Anyway, I put some more air in and got them all correct. They do vary with temperature - if it is a cold morning then they are lower. They are higher later in the day and after driving. They should be pretty much the same across each axle though. Mine are 2.5 bar rear and 2.3 bar front for 20in wheels on an SD.
As Ian says
I check mine regularly (monthly) with a handheld guage. The TPM reads 2.3 front and 2.5 rear which will go up to 2.5 and 2.7 when being driven. It did get to 2.6 / 2.8 on Thursday but in all cases it stays constant side to side.
You’ll find you beed to out a drop in when winter comes and take a drop out as summer approaches.
I also find it will show 0.1 different if parked sideways in the sun.
I check mine regularly (monthly) with a handheld guage. The TPM reads 2.3 front and 2.5 rear which will go up to 2.5 and 2.7 when being driven. It did get to 2.6 / 2.8 on Thursday but in all cases it stays constant side to side.
You’ll find you beed to out a drop in when winter comes and take a drop out as summer approaches.
I also find it will show 0.1 different if parked sideways in the sun.
1st Sapphire SD
2nd Sapphire GTS
viewtopic.php?f=23&t=4296
Current 992 S Cab
viewtopic.php?f=23&t=9845&p=196465#p196465
2nd Sapphire GTS
viewtopic.php?f=23&t=4296
Current 992 S Cab
viewtopic.php?f=23&t=9845&p=196465#p196465
So true....but define “cold” on a winter’s morning...or a summer am.....
I find around 0.1 / 0.2 bar difference between, say January and July (2-5 degrees / 15 degrees)
1st Sapphire SD
2nd Sapphire GTS
viewtopic.php?f=23&t=4296
Current 992 S Cab
viewtopic.php?f=23&t=9845&p=196465#p196465
2nd Sapphire GTS
viewtopic.php?f=23&t=4296
Current 992 S Cab
viewtopic.php?f=23&t=9845&p=196465#p196465
Steve
2020 GTS in Sapphire Blue
(sold) 2017 SD in Rhodium Silver
2020 GTS in Sapphire Blue
(sold) 2017 SD in Rhodium Silver
Yup, 0.1 bar per 10 degrees ambient....measured prior to driving first thing in the morning.
1st Sapphire SD
2nd Sapphire GTS
viewtopic.php?f=23&t=4296
Current 992 S Cab
viewtopic.php?f=23&t=9845&p=196465#p196465
2nd Sapphire GTS
viewtopic.php?f=23&t=4296
Current 992 S Cab
viewtopic.php?f=23&t=9845&p=196465#p196465
-
- Similar Topics
- Replies
- Views
- Last post