What is a good 12 volt air compressor?

As Rowdy6032 accurately stated, "it's an bit like asking about tyres"! I have an ARB twin cylinder with air tank in the plastic carry case. It is certainly very fast and I have had it since 2012 with reasonable use. It is heavy and a little bulky but getting the tyres up to the correct pressure has been very easy.

I was in the Simpson Desert a few years ago and one of travelling companions looked askance at my Sidewinder compressor that I bought from Derek Bester back when he was prominent on here.

A few days later when his on board ARB compressor failed to function (they used to say something like that at Rolls-Royce I believe) he was grateful that the little Sidewinder was still pumping.

I've generally been happy with the few things I've bought from Supacheap.

But you never really know with anything do you? I bought a used Prado a few years ago that has an onboard ARB jobbie and when I pack for a trip I often wonder if I should chuck the old Sidewinder in as a back-up.

Good luck.

They seem pretty hard to beat in the value for money stakes and most people seem happy with them
The only issue I have with them is they are huge. I prefer the ARB unit but only because they are compact
If size wasn’t an issue I would save the coin and get the Kings unit too.

I'm sure I'd need the RFDS in a hurry.

Regards