Can the tyre pressure monitors be calibrated

[keith.r]

The tyre pressure monitors on my 09 GS are hopelessly inaccurate, under reading by 0.4bar
To avoid riding with a constant flashing amber warning light results in the tyres having to be over inflated
IMO the TPM are a waste of money - unless they can be calibrated more accurately.
I have exactly the same problem with the TPM on my K12S as well

 

[dave hendy]

The tyre pressure monitors on my 09 GS are hopelessly inaccurate, under reading by 0.4bar
To avoid riding with a constant flashing amber warning light results in the tyres having to be over inflated
IMO the TPM are a waste of money - unless they can be calibrated more accurately.
I have exactly the same problem with the TPM on my K12S as well

If you have the problem on both bikes are you sure the gauge you are using to do your pressures is accurate The ones on my bike are OK

 

[Beemerman59]

If you have the problem on both bikes are you sure the gauge you are using to do your pressures is accurate The ones on my bike are OK

In the cold mine are reading higher than my guage - I assume because they are adjusted by the computer to a theoretical temperature of 20 degrees c. Agreed it could be your gauge. Also had them changed to read psi which means more to me than bar.

 

[dave hendy]

In the cold mine are reading higher than my guage - I assume because they are adjusted by the computer to a theoretical temperature of 20 degrees c. Agreed it could be your gauge. Also had them changed to read psi which means more to me than bar.

I wish mine read psi, don't know why they put them in BAR in the UK Temperature does make a difference you can tell that as the tyres get warm.

 

[Kremmen]

I use a calibrated & traceable tyre pressure gauge as part of my job, the indicated pressures on my GS are 0.2bar higher on the front & 0.3 higher on the rear (using the gauge)... this collates to only 2.94psi on the front 4.41psi on the rear.
I have only carried this out cold ....

Not a bad accuracy IMO

 

[Kremmen]

I wish mine read psi, don't know why they put them in BAR in the UK Temperature does make a difference you can tell that as the tyres get warm.

How i understand it ... if you get the bike into a dealership they can change the readout from bar to psi using a laptop

 

[dave hendy]

How i understand it ... if you get the bike into a dealership they can change the readout from bar to psi using a laptop

It can be done, not sure if they will do it for free though

 

[Kremmen]

Very true .... i do intend to have mine changed later in the year.

 

[dave hendy]

Very true .... i do intend to have mine changed later in the year.

I will ask next service if they will do it for free I'll get it done

 

[Beemerman59]

I had mine changed to psi at the last service and the indicator delay put out to the maximum - both done via pc. I said don't bill me as I don't want the bike washed in return (it's been ACF50'd already). The final bill was still as quoted although they are not giving fully itemised invoices like they used to so I can't really tell. Apparantly thats a BMW edict.

 

[GSmiles]

The tyre pressure monitors on my 09 GS are hopelessly inaccurate, under reading by 0.4bar
To avoid riding with a constant flashing amber warning light results in the tyres having to be over inflated
IMO the TPM are a waste of money - unless they can be calibrated more accurately.
I have exactly the same problem with the TPM on my K12S as well

Yes, they can be re-calibrated. Its a dealer job though, so try and get there before the warranty runs out. My bike wasn't quite so bad - I didn't have to over-inflate the tyres to avoid the warning but the dealer agreed to recalibrate them after I pointed out that every tyre gauge out there can't be wrong...The reading on my bike was .3bar under when the tyre was at the correct pressure and then only .1bar under when the tyre was let down to 1.8bar on his tyre pressure gauge . they re-ran the set-up procedure on the computer and its all fine now....If your dealer doesn't believe that it needs to read correctly, refer to the owners manual - it points out that you should believe the reading on the bike in preference to whatever the gauge on the forecourt says.

 

[keith.r]

Ive tried 3 x aftermarket pressure gauges and they are all within 0.1bar
so it is definitely the TPM that under read
Looks like a trip to the Stealers is on the cards

BTW I posted this same issue on the BMW K bike forum and the consensus there was that the TPM's on the K12S are 2 years old and the internal batteries probably need replacing.

 

[trebor]

I had both the Pressure reading changed from Bar to PSI and the autocancel on the indicators put to maximum during a recall (OK, it wasn't a recall but an enhancement of whatever they call it) a few months ago. There was no charge.

The TPM on my (nearly two year old) bike are working fine.

Bob

 

[dave hendy]

Ive tried 3 x aftermarket pressure gauges and they are all within 0.1bar
so it is definitely the TPM that under read
Looks like a trip to the Stealers is on the cards

BTW I posted this same issue on the BMW K bike forum and the consensus there was that the TPM's on the K12S are 2 years old and the internal batteries probably need replacing.

I don't think you can change the batteries so it would be new sensors, nice little earner