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Originally Posted by jbecwar
Isn't the GVWR supposed to be equal to the sum of the front and rear GAWRs?
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No, not on a truck. You could have a tail-heavy load or a nose-heavy load, so you need extra capacity available on the axles to handle that condition. But you should go by the GVWR to determine if you're overloaded - not the GAWR, and especially not the combined GAWR.
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Here is the route we are planning to go, any advice would be appreciated:
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That's the normal "Alaska Highway" route, which is fine for a car or a truck that's not overloaded. But you'll be overloaded, so you need to choose a route with minimum mountain passes to climb. On the Alaska Highway, you'll cross the Rockies in the Yukon, then it's up and down until almost Edmunton. Then in northern Montana you'll have some grades to climb. And the last obstacle is Raton Pass between Colorado and New Mexico.
I would still go from Fairbanks to Seattle, then to Bakersfield and then to I-10, then I-10 to Houston.
But if you insist on the Alaska Highway route, then make one change in their suggested route. Basically, from Denver to Amarillo, take I-70/U.S. 287 instead of I-25/U.S. 87. That's about the same miles but no Raton Pass to climb. I've been both ways several times. The only reason to go I-25/U.S.87 is about 200 miles of interstate instead of only 70 miles of interstate. But U.S.287 is mostly 4-lane now, and it's the preferred truck route between Amarillo and Denver because loaded trucks hate Raton Pass too.
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