BMW R1200RT/R1250RT Forum

Today, I realised that the tyre inflator at the supermarket, lets air out, instead of putting it in....!  The problem being that the short valve on the front wheel of the RT, doesn't allow the inflator to make a proper connection.


So, I've just been on EBay, and ordered these:


https://www.ebay.co.uk/itm/12V-Portable-Air-Compressor-Wheel-260psi-Tyre-Inflator-Pump-Car-Auxiliary-Tools/192529250910?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649


https://www.ebay.co.uk/itm/1X-Car-Tyre-Valve-Extension-90-Degree-Adaptor-Motorcycle-Tire-Stem-Extender/223045065055?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Halfords Michelin foot pump works for me in the garage. It has a screw fitting. On the bike have an electric pump again which uses a screw fitting. The older lever type do not play well with the short BMW valve stems. I'm guessing the supermarket pumps use a lever type valve attachment. Never used one as I always check and pump tyres when cold before a ride. Those right angle valve adapters work well but you will lose a little air when unscrewing them.

I cannot see what current (amps) the pump draws from the specs. If you are going to use the bike socket beware of it current limitations. The pump may not work. If it doesn't then you will need to use a pigtail directly from the battery probably with a 15 amp fuse.


2014 LC bike socket is rated at 10 amps max.

I have an optimate connector that is direct to the battery, so I'll remove the cigar plug from the pump, and fit an optimate one.

Sullivj wrote: I have an optimate connector that is direct to the battery, so I'll remove the cigar plug from the pump, and fit an optimate one.

Aha that gives me an idea (pondering the same issue) as I could use the plug for my Oxford heated vest.