Tyre pressure reading accuracy (1 Viewer)

Jul 11, 2020
543
1,440
Southampton
Funster No
72,887
MH
Benimar Tessoro T486
Exp
Since August 2020
Any thoughts on the accuracy or otherwise of the dashboard warning of tyre pressure?
Brand new Accordo 105 (250 miles on clock) was driven to garage for fuel - noted warning low tyre pressure 3.5 bar "rear right" - which I took to mean offside - ie right side from driver seat. Checked it and and inflated to 5.1 bar.
Took Harvey the RV for an inaugural spin and again low pressure light and warning showing 3.4 - either gauge or valve faulty or a not so slow puncture?.
After just 45 minutes, returned home and gauge now reading 5.4 bar which was ok as tyres were warm.
Left it for 3 hours and went out to check while cold - yep warning light "rear right" but showing as 5.4bar. Checked with pump gauge which showed 5.2 so hardly low.
On a hunch, checked rear nearside and pump showed 4.95bar - not really low either but dash warning not on for "rear left".

I have checked tyresafe motorhome site and they suggest 5.5bar for rear based on max allowable rear axle weight of 1900kg - as our MH is very light on onboard kit, we're well below .

Advice welcomed please
Thanks
 

JohnJan

Free Member
Jun 26, 2019
303
997
England
Funster No
61,946
MH
PVC
Exp
Since 2011
Probably your osr tyre valve sensor is faulty, giving you the dodgy reading.

What ever your base vehicle is, contact the Fiat/Peugeot garage and get a new valve with sensor fitted
 

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