Hi justjeff sounds like a great trip -
Our local county has been laying the gravel to the roads and with recent dry weather it is loose. Some roads have 6 in deep ridges of loose gravel, and some truck haul roads have "motorcycle traps" - punched out soft rutted spots that were not graded first, just graveled over. The KLR wags the bars back and forth, jigs around underneath you. You have to be paying attention.
Definitely helps with improving the "relax and weight the pegs" skills but most of us residents prefer properly maintained roads.
While the KLR is "all over the place" on these surfaces, my Triumph Tiger 955i at 100lbs more weight than the KLR rolls right along on it's bigger Metzler Tourance tyres, much more composed, with instant spin the rear wheel power on tap to power out of the out of shape bits. But you cannot body English it around so easily and I don't have the stand up ergo's fully sorted yet, so I take it cool.
I'm kind of in the same camp as justjeff - tire pressures seem to have more effect on different surfaces than this tire and that tire.
Just an opinion - I think the big knobby tires are taking damage on sharp gravel surface roads because they let stones into the carcass area. A less aggressive tire might work better on gravel / paved surfaces? It seems that round the world riders prefer these?
we have the same 2 bikes ..
I run the shinko 705s on my tiger on same roads as my klr and your right the heavier bike up front just seems to walk thru the loose gravel roads where my klr wanders a bit ..
but get the 21 in front wheel of klr in the technical 2 track versus the the 19 in wheel and it comes very clear wich is designed for what ..
while ive taken the tiger into places leaving others shaking their heads lol ,,
everyone sets up same bikes up so differently with add ons and different spring rates its hard to pin it down to a single issue ..
for me one my best gravel fixing issues wasn't tires or pressure but getting me comfortable standing and riding .. so I went to wider bigger pegs longer shifter and rox risers and slightly wider and taller pro taper bars ..
so now im standing naturally and over the front forks I have a lot more confidence now and enjoy swinging ass around corners ..
I still have not gotten comfortable on steep technical down hilling yet so lots of riding in my future to get it down lol ..