Tyre Pressure Monitorig System (Tpms)

[steve27bha]

My reading of the eBay item is that the sensor is in the valve cap. That - to me - implies the cap holds the valve open so the pressured can get to the cap. So the valve is negated and the only thing retaining the pressure is the seal on the cap.

Hmmmmm.

OK, if the cap falls off the valve will do its job but the cap seal itself could form the source of a leak.

 

Another query - if the cap has the sensor how does it monitor the air temperature in the tyre?

Hmmmmm again!

 

A better design with the sensor built into the base of the valve unit - or so it seems to me - is this one:- https://www.ebay.co.uk/itm/Motorcycle-TP...0010.m2109

 

That seems OK but needs the tyre displaced to insert it, and it doesn't have a right-angle valve stem like I find so useful. Also there is a battery on the internal sensor and the claimed life is two years so that replacement would need to be taken into account. Maybe coordinate with tyre change?


Maybe such a combo. (internal, right angled) exists, but I'm not in the market so someone else can go search if they want.

This post was last modified: 18-03-2019, 11:42 AM by steve27bha.