Rear tyre valve leaking

[bmwblue]

I have tyre pressure sensors on my GS.

The rear valve is leaking because the rubber seal is worn out. I need to get a new tyre value for the pressure sensor.

If I get my local tyre fitter to replace it, do I need to take the bike to my BMW dealer to have it calibrated?

Thanks

 

[autogs]

if its just the rubber seal leaking you can get a repair kit for a tenner at your local bm dealer,only if you replace the sensor itself will it need coding to the bike at bm or someone with a scan tool.

 

[Nice 'n' Fat]

After having a rear valve crack on my RT I wouldn't have TPM as a gift

 

[autogs]

each to his own i suppose,my tps alerted me to a puncture just as i was about to join the a31 in devonshire,no doubt i would have sped off rather quickly,im glad i was able to pull of in a quiet road and plug the hole than drive on a soft tyre at 70 plus.

 

[Bendy toy]

Use an angled valve adaptor for filling the tyre and the valve stem wont get cracked.

If you dont have access to the official repair kit a turn or two of self amalgamating insulating tape or many turns of plumbers PTFE tape will do the job.

 

[bmwblue]

I agree about having a TPS. My TPS has alerted me to punctures before I was aware I had a problem. I wouldn't be without it.

Thanks for the advice guys.

As my dealer is a long distance away, does anywhere sell them where I can order online please?

 

[RoyF]

I did a bit of a test with my TPM's, I had my display set to read in PSI rather than bar, and with 32F and 36R, I think I got a red alert at about 25 or so, but I didn't get an amber one first like I should, might be different if it went down slowly, but this was just a simple test in the garage before they switched off after 15 mins, but at least I know it works Might get chance to be a bit more scientific with it one day.... when I'm not too busy..!!

 

[Bendy toy]

The sensor just sends out signals that indicate the tyre pressure. The warnings are controlled by ECU software so the test described has no value. If the ECU is picking up the correct pressure that's all it needs to see.

 

[bmwblue]

My dealer has the kit for £10.50 plus postage.

If I want it fitted by them it comes to £70.39 (including the kit). Seems a lot of money for essentially replacing an O ring.

If my local tyre fitter installs it, I should know straight away (if the TPS light comes on or not) if I then need to take it to the dealer to have the ECU reset.

 

[RoyF]

Agreed it's the ECU that decides if a warning should be displayed or not.

What I was trying to find out is at what value between 32 for example and 0 it decides to give a warning, so the test is relevant, as I found out it was at around 24 or 25 psi which I din't know before, or am I still missing something

 

[Bendy toy]

BMW should be able to tell you at what pressures the system is set to go yellow then red.

 

[Smug]

Go and buy an "O" ring from a motor factors and fit it.

Sometimes the seal compresses slightly and you can reseal it by nipping up the valve collar.

 

[autogs]

Go and buy an "O" ring from a motor factors and fit it.

Sometimes the seal compresses slightly and you can reseal it by nipping up the valve collar.

its not an o ring exactly,its a rubber ring,flat in profile so a motor factors o ring will be of no use.

 

[Smug]

I know it is but I would still try an O ring.

 

[oblertone]

The A31 isn't in Devonshire

 

[autogs]

well the bit after then,towards the pointy west bit of the country

 

[Bendy toy]

The sealing ring is flat or maybe wedge shaped - an O ring unlikely to work but there might be universal flat rings that fit. Self amalgamating tape will squash down as would PTFE.

 

[autogs]

its completly flat,imagine a very thin section from a bike inner tube,just fitted two so the image is fresh