If nothing works then I assume I need to use ratchet straps to compress the tire against the rim. Something like the BeadSetR
http://www.bestrestproducts.com/c-154-beadsetr.aspx.
£60 for a poxy little ratchet strap? !
All they've done is added a rubber band to it and stuck it in a bag with a few words on it
You don't need a 'special' ratchet strap....any will do...I used a big fekk off lorry strap the other day to do mine, although I wouldn't carry it on the bike.....too big and too heavy.
In fact, you don't even need a ratchet strap at all...just a length of webbing (inch or so wide minimum and long enough to go around the tyre+ a few inches) and then you can twist a stick in it like a tourniquet.
If you go along to your local BMW dealer and ask nicely, they will have hundreds of these 'cam buckle' type out the back....every new bike they have shipped in comes with half a dozen of them as tie-downs, and they are extremely good
(The bmw ones are white and a little heavier duty than this one)
A heavy duty Lorry strap will cost you about £25, or a pint to anyone who drives a truck .....lighter ones are fine, and you'll pay about £15 for a decent quality one that won't fray too quickly.....
Draper, £14.53 in vat
As for the compressors, do a quick search here.......nearly all of them have been mentioned at some point or other.
TIP: When you use the compressor (or even a foot pump if you want to give that a go) Take the valve core out of the tyre to get as much volume of air in there as fast as possible to seat the tyre.....once it's seated, replace the valve core and inflate as normal
If you're touring, you can use a squirt of watered down shampoo or soap around the bead to help it go, but don't do that if you're going to be running lower pressures offroad (unless you have rimlocks)
EDIT....I always have 3 or 4 of the BMW ones on board.....they can be used for all sorts of things from making a washing line, towing another bike, lashing a bag of dirty washing on top of a pannier, holding broken bits of bike together, strapping your bike down more securely after Diego the deck hand has wandered off leaving a tatty bit of old rope loose looped through a deck hook, a bit of casual bondage, and once, for tying up a big bitey dog that was terrorising our campsite
