Wow, fantastic work on the hardware, skin, and configuration utility! Just wish there was a current place to buy the "whole package".
Over here in the U.S. we use PSI (Pounds per square inch) and not Bar's. In preparation to the hardware becoming avail, is there a way you could add a math conversion into the extension plugin to measure in PSI? Possibly just a check mark / drop down list in your config utility? I have never personally seen a tire pressure gauge, compressor or such using Milibar's here.
Secondly, another very useful addition, would be the ability to have a "Add Air" mode button on the skin. Pressing this & then adding air to the tires would sound an audible tone, speech or something to let you know you are at the correct pressure. It would save on adding air, checking with a gauge, adding more air, checking with a gauge... Adding air, OOPS too much...hisssssss.
