I've been agonizing over my choice of tires. My last trip to Alaska was on my 2004 KLR. By the way, that was a great bike to do these kinds of trips. I chose Mitas e-07's for that trip and they easily made the entire 10,000 mile trip. If Mitas had not changed the tire to the E-07+, tire choice would have been easy. However, the new E-07's, reputedly, won't get the same mileage. I really didn't want to change tires along the way.
I'm pretty easy on tires, and there's a good chance I'd make the whole trip. But I'd worry. I am riding a bike this time that weighs about 150 lbs. heavier than my KLR. I just can't be sure they'd last the whole trip.
Another concern is the construction zones. One of the riders I met at Dust to Dawson totaled his bike in a construction zone. I went though one section around Chicken that was being doused with a lot of water. I went through a couple spots with, about, 6" of mud. I almost lost it a couple of times. I have no dirt bike experience, so the construction zones scare me. I feel the need to have some tires that will be good in the rough conditions even though I'll be riding 95% on paved roads.
This is my solution. Either Motoz Tractionator GPS or Mitas E-07+ for the first part of the trip and then switch to Shinko 705's in Whitehorse, YT for the way home. I'd encourage comments about the Motoz or Mitas. I'm pretty well set on trying the Shinkos on the way home. I've always wanted to try them. After the Alcan and TransCanada, I should have a pretty good idea how I like them.
I'd welcome any comments about tires as I've not ordered them yet.
Be Well! KKORO
KKORO I'm a big fan of Metzeler's 1st generation Tourance. On my first trip up I started out on these and carried a set of Continental TKC80's with me. I was told that the TKC80's would only last about 1,500 miles at the most, I switched them out in Tok before going up the Dalton for the first time. They did great, so great that I got to thinking that I was 17 again and before I knew it I was rolling along at 70 mph. Then I hit a big hole that I couldn't miss and bent the front wheel, not only bent out the bead edges of the wheel, but bent it out of round in between the spokes! After getting a new wheel back in Fairbanks I road those TKC 80's all the way back to Western Kentucky, and road them around here at home for a thousand or so more miles. The great mileage could have been due to the fact that it rained on me most of the way home and was cold, maybe this kept the wear down, I'm not sure.
On the second trip up, I could have easily made the round trip on the one set of Tourances. I did get a tear out of Whitehorse and had to be hauled back, I also had to have a wheel bearing replaced while I was there, be sure and check yours, or possibly replace them if you have some miles on them. I rode the Dalton all the way to Prudhoe Bay with the Tourances and never had a bit of trouble even with the snotty slick conditions. My buddy had never ridden off road, and I had made him follow me on every gravel road I could find here locally and he did fine on the stock tires he had on his BMW 700GS. I'm like you, I'm not real comfortable riding a loaded to the gills bike in deep mud, just take your time and you'll be fine.
One more thing about Tok that you probably know about already, Fast Eddy's is the place to eat, I saved up on meals on the way up so I could splurge and eat there and at Homer down on the Spit, great places to eat there if you like fresh seafood! I'm looking to go to Dawson, but we won't be able to make D2D I don't think. Then I'm hoping to see the places we didn't get to see on the first two trips up. Sounds like you have everything figured out, I'm no expert by any means, but if you have any questions I'd be happy to share anything I know.