My motorhome tyres need pumping up to 5.5 bar (80 psi), an operation that has already destroyed an old Halfords pump and one rated at 150 psi that I bought from Amazon (clicky link). I have a bicycle track pump that does the job (albeit involving way too much exercise) and so I'm looking for a new inflator. It's difficult to get at the terminals on either the cranking or leisure batteries, and so I'm looking for one that plugs into a 12V cigarette lighter socket. Any recommendations for an inflator that can top up all four tyres without self-destructing? Thanks for looking.