I've been reading through the various toolkit and spare parts threads in the quest of the Goldilocks kit that balances need, space, and weight. As noted in another thread, I am guilty of packing a heavy and cumbersome TEOTWAWKI kit based on perceived need instead of reality. We all know there are basic tools that BMW doesn't provide. My question is what tools, and under what circumstances, have you actually used in order to return home? 1. Lost rear brakes though the MT Rockies, completely failed in WY, and was able to make it to the dealer in Sturgis, SD. Pads and fluid were replaced, but the reason was never identified and was not fixable without items that I do not carry. 2. Water crossing spill. High-centered in a creek crossing in MO. I put my foot into a hole and fell, but killed the engine before any water ingress. I carry a plug socket and coil puller, but luckily did not have to use them. 3. Not a breakdown, but I air up/down quite often so always have a compressor.