Further to the discussion of taking big ADV bikes to Indonesia - I've done it twice, and I agree it's not a good idea. Only reason I took one on the second trip was because it was two-up self-supported for 5 weeks, so needed to carry a lot of weight. My first trip was on an F650 Dakar - way too big and heavy. After that trip I bought a DT230 two-stroke to prep for my future rides. About using a BMW: outside of the cities, you can only get 87 RON fuel. The sticker on a GS1200 says "98 RON recommended, 95 RON can also be used". I recommend checking with BMW tech support about using 87 RON. The answer will probably include mention of "holes in the pistons". The KLX 250 is reasonably well supported in Indonesia, so you could get parts and expert mechanics in most places. However, with compression ratio of 12:1, I don't know how it would cope with 87 RON. I chose the DT230 because if has more than 2x the power of a KLX and a compression ratio of 7:1, which could probably run kerosene if I had to.