When I travel, I take everything I might need. I may pull a trailer without a spare but I'll have a 12 volt air compressor, a can of fix-a-flat, tube patches, tire plugs, high lift jack and tool box. I don't fly commercial any more because I can't carry my swiss army knife. If I have my pants on, I have my pocket knife. Speaking of spare tires, I've got to go get on the tread mill. Got a backpacking trip in NM next month with a bunch of 4H kids.