When we went last year I packed like I was going to build a truck from scratch. When I go back I will still take a nice array of tools but not everything I own. I took two trailer spares and used only one and that was caused by something you could pick up anywhere. Some of the roads had some rather large rocks that looked like could shred a tire at will. Next time I’ll deflate them and still drive slow. I have a pancake compressor and little generator to reinflate with later. Deflating also helps on roads that were ruined (oops graded) with a bulldozer. It should help smooth those out too. I will also pack one supply of oil and a filter for an oil change because I found the stuff I use is not always readily available.
Remember, Alaska is not a third world country like some you tubers will have you believe. The best thing to have is lots of time with a heapin helpin of patience.
Hope you have a great trip!!!!