Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Tyre pressure monitor
#1
Just info for the forum,

I had to fit a new rear tyre a few weeks ago, the remaining 3 tyres had done about 20k, but still OK, the new tyre obviously has more tread and therefore a slightly bigger diameter. 

I'm assuming ( I don't actually know) that the tyre pressure monitor,  just counts the wheel/tyre revolution per unit length (when the steering wheel is centered) and if the readings per axle are different, it 'assumes' this is due to tyre pressure and gives the warning.  It is therefore assuming the tyre wear to be similar. 

I've obviously checked the pressures, all is well, but I've had to do a reset 4 times so far, I was hoping it was semi intelligent and would 'accommodate ' the difference between new and older tyres, but it does not seem that Citroen employed very good software programming. 

If it carries on any longer, I'll fit another new tyre to the same axle,  and that should sort it...
Reply
#2
Indirect tpms uses wheel speed
Direct Tpms, bizarrly ,uses actual tyre pressure of all things..

Faulty system can invite an mot fail.
It is on my to do list.
But not right at the top

2012 Hdi75 van
Reply
#3
(14-04-2024, 10:09 AM)Blakey Wrote:  Just info for the forum,

I had to fit a new rear tyre a few weeks ago, the remaining 3 tyres had done about 20k, but still OK, the new tyre obviously has more tread and therefore a slightly bigger diameter. 

I'm assuming ( I don't actually know) that the tyre pressure monitor,  just counts the wheel/tyre revolution per unit length (when the steering wheel is centred) and if the readings per axle are different, it 'assumes' this is due to tyre pressure and gives the warning.  It is therefore assuming the tyre wear to be similar. 

I've obviously checked the pressures, all is well, but I've had to do a reset 4 times so far, I was hoping it was semi intelligent and would 'accommodate ' the difference between new and older tyres, but it does not seem that Citroen employed very good software programming. 

If it carries on any longer, I'll fit another new tyre to the same axle,  and that should sort it...

If your vehicle has a spare that is new, then maybe switch the slightly worn tyre on the same axle as the new tyre with the spare? Worth a try rather than going and buying another new tyre just so you don't get pressure warnings?
_______________

Current:
2008 B9 1.6Hdi Multispace XTR

Previous:
2007 M59 1.6Hdi Multspace Desire
2002 Xsara Picasso 2.0Hdi
1996 ZX 1.9TD Estate
Reply
#4
(14-04-2024, 12:00 PM)Multispacer Wrote:  
(14-04-2024, 10:09 AM)Blakey Wrote:  Just info for the forum,

I had to fit a new rear tyre a few weeks ago, the remaining 3 tyres had done about 20k, but still OK, the new tyre obviously has more tread and therefore a slightly bigger diameter. 

I'm assuming ( I don't actually know) that the tyre pressure monitor,  just counts the wheel/tyre revolution per unit length (when the steering wheel is centred) and if the readings per axle are different, it 'assumes' this is due to tyre pressure and gives the warning.  It is therefore assuming the tyre wear to be similar. 

I've obviously checked the pressures, all is well, but I've had to do a reset 4 times so far, I was hoping it was semi intelligent and would 'accommodate ' the difference between new and older tyres, but it does not seem that Citroen employed very good software programming. 

If it carries on any longer, I'll fit another new tyre to the same axle,  and that should sort it...

If your vehicle has a spare that is new, then maybe switch the slightly worn tyre on the same axle as the new tyre with the spare? Worth a try rather than going and buying another new tyre just so you don't get pressure warnings?

Thanks,  I did just that this week.  The spare was new, so hopefully no annoying pressure warning.  I did notice when I removed the LH rear tyre is showed uneven wear, I know the previous model sumtimes had a faulty rear axle alignment,  but thought the K9 was fixed? Anyone else had a problem?
Reply


Forum Jump:


Users browsing this thread: 1 Guest(s)
[-]
Welcome
You have to register before you can post on our site.

Username:
  

Password:
  




[-]
Search
(Advanced Search)

[-]
Latest Threads
99bhp & 128bhp same engine?
Last Post: notsofast
Yesterday 09:42 PM
» Replies: 3
» Views: 62
Whats the S for? 19oC/19oC S
Last Post: evdama
Yesterday 07:08 PM
» Replies: 1
» Views: 71
Wind noise at speed
Last Post: StarFish
Yesterday 04:14 PM
» Replies: 16
» Views: 1385
Can MAF Sensor cause multiple faults and poor st...
Last Post: Bizzy9
Yesterday 04:12 PM
» Replies: 0
» Views: 28
ABS light comes on with a beep
Last Post: Multispacer
Yesterday 10:16 AM
» Replies: 3
» Views: 90
Identify a part
Last Post: Drummond
23-05-2024 05:53 PM
» Replies: 1
» Views: 99
Locked car while driving.
Last Post: Drummond
23-05-2024 05:45 PM
» Replies: 12
» Views: 427
Multispace Seats Flair 69 plate for sale
Last Post: Gollycrush
23-05-2024 04:31 PM
» Replies: 0
» Views: 51
ABS light, No Speedo, Loss of Power. Can anyone ...
Last Post: shtu
23-05-2024 02:28 PM
» Replies: 14
» Views: 375
Rear Tailgate wont unlock/open
Last Post: bradwebb
23-05-2024 01:56 PM
» Replies: 0
» Views: 48

[-]
Recent Visitors
Locations of visitors to this page

[-]
Hosting by

QuickHostUK