Have a 2013 Cooper S that has the low tire pressure warning, but I would like to see actual pressures now that its cold without using a gauge on each tire.

I saw several with tire stem caps, and one that used the phone - which would be great.

Just need to know when I want to check. Doesn't have to be permanent.

TIA!

 

those valve stem cap systems are cool, but I spent the $ instead on a good pressure gauge, Viair compressor, Dynaplug kit, and a small tool bag to keep it all together in the trunk.