If you have got scuba diving equipment or a friend that will lend them to you.

This tire inflation gadget will come in handy. I'm not going to bother doing the sums even though i'm a scuba instructor but what i will say is a normal tank of air will hold around 2300 Litres of air & that i guesstimate to fill over 30 motor bike tires from 0-60+psi if required.

This tough handy little gismo fits onto the low pressure inflator hose of a standard set of scuba regs!! easy & fast......truck needed as quite heavy equipment, perfect for remote areas if you use a truck & trailer for example



Many types to go for....cheap chrome ones or tougher brass tire gadgets:
Brass Tire Inflator Fits BC Hose Scuba Tool Diving Gear | eBay

 

Does Rachel know you have her reg? I have those stashed in every vehicle I own plus a few more places. But then again I sell gear and compressors for $ so it would be crazy not to have them.

You should check out the new one from XS Scuba. Inflator on one side blower on the other.

Cheers, Jim