I’m lucky that I already had a largish compressor (150 litre reservoir) which I got for car painting. I’ve really needed it for some tyres that are particularly stubborn at seating again the rim. This size of reservoir means it can give out 100psi for many minutes.
It depends what your tubeless wheels are like – if you find all the tyres pop in place fairly easily, you probably don’t need a large volume of air.
Personally, I don’t think you’d regret buying a proper air compressor – by that I mean something with a reservoir of at least 50 litres.
Bear in mind, these items are quite noisy – and you’ll have to spend a lot of money to get a quiet one (it would need to be belt driven at least). In case you don’t know, compressors with a reservoir (large cylindrical tank) are only noisy when filling up the reservoir – once the desired pressure is reached, they cut out automatically. You can then turn the power off and it doesn’t make any noise while you use the air up – the really cheap bench-top compressors you see don’t have a reservoir, so need to make a racket all the time while giving out air.
Look on eBay – something like the following would be pretty good:
http://www.ebay.co.uk/itm/SIP-06292-230v-Airmate-25ltr-Hurricane-Oil-Free-Air-Compressor-WORKING-5984-/261381241878?pt=UK_Air_Tools_and_Compressors&hash=item3cdb893c16
It will be noisy (it’ll probably wake your neighbours at midnight). But at least with that size of reservoir you’ll have enough to seat all your tyres.
You’ll also need a tyre inflator like this:
http://www.machinemart.co.uk/shop/product/details/clarke-30d-airline-tyre-inflator-with-pressure
My NoFlats rim strips came with nice Presta to Schraeder valve adaptors with a built in o-ring at one end. They work perfectly and don’t leak at all.
So if you do go down this route, don’t forget you’ll then be able to get a paint gun and try your hand at spraying.
