How Accurate is the Tyre Indicator on the LC ?

[advancedbiker]

I recently had my BMW R1200GS LC TE serviced and noticed before it went into the workshop, low reading on the Tyre Monitors showing on the dash. The recommended being front 2.5 bar and rear 2.9 bar. After the service it was still showing the same values, 2.3 bar front and 2.5 bar rear.

I informed the dealer and got this response.........

Quote: 'The system on the bike will only be accurate at 20 degrees if cooler it will show low and if hotter it will show higher.'

Anyone has the same reading when the UK temperature is around 8 degrees......

 

[dave hendy]

After I plugged my rear tyre I used to ride showing the pressure to keep an eye on it. On rides it didn't loose pressure but used to gain 1-2 bar depending how warm the tyres got. I found it to be quite accurate. Shame it used to drop 6-10 bar not used during the week though, so I got another tyre but did get another 1k miles out of it.


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[Andy_E]

The handbook says:
"The tyre-pressure readings shown by the multifunction display are temperature- compensated; the reference tyre temperature for these readings
is always 20 °C."

My pressure readings are consistent and drift by about 0.1 bar, and probably within about 0.1-0.2 bar of my pressure gauge. I tend to use them to indicate when there's a possible problem rather than an accurate check of pressure.

 

[kurienp]

For a preventive check before you ride, always have a pressure gauge and that becomes your 'go-to' item for tyre pressures. The onboard computer is better to be used for warnings and indicate problems as he ^^ says.

 

[Old Den]

I think your dealer is giving you duff info.
Yes the readings are tyre air temperature compensating so they will indicate the same pressure whatever the air temp is in the tyre. Best way is to check your tyres with a `good quality `gauge when cold -say 2.5/2.9 and the display should read the same. When the tyre air temp is hot the display will still read 2.5/2.9 as is calibrated to make allowances for tyre air temperature variations. If you check the tyres when hot after a run with your `good quality` gauge they will almost certainly have increased to say 2.7/3.1. If you let drop the pressures back the 2.5/2.9 with your own gauge then when you go down the road the display will read 2.3/2.7.
Always carry your own gauge on the bike and use that to set base pressure .
Hope I`ve explained it ok.

 

[dave hendy]

After I plugged my rear tyre I used to ride showing the pressure to keep an eye on it. On rides it didn't loose pressure but used to gain 1-2 bar depending how warm the tyres got. I found it to be quite accurate. Shame it used to drop 6-10 bar not used during the week though, so I got another tyre but did get another 1k miles out of it.


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Oops when I say "gain 1-2 bar" perhaps I meant 0.1-0.2 bar!

 

[RedRick Esq.]

I could never gat the TPS to match any of my quality gauges