The KLR will ABSOLUTELY slip the tire on the rim at pressures of 15psi and below, pulling the valve stem out of the tube resulting in a rapid loss of air pressure and possible loss of vehicle control with resultant injury or death to the rider and anyone nearer than 5 miles from the crash.
Certainly, slipping the tire on the rim is POSSIBLE, but . . . the likelihood remains a function of tire pressure and usage, IMHO.
Assuming 15 psi minimum tire pressure, and a typical KLR riding profile, slipping the tire appears a remote possibility, to me.
My impression only, but . . . how many KLR riders install rim locks?
A rim lock does no harm; KLRista's choice; rim drilling required, re-balancing necessary after installation.
Full disclosure: I've pulled a valve stem from a front tire on my Generation 1 KLR650; Continental Trail Attack, probably from under-inflation (sound rider maintenance requires frequent pressure checks); did not leave rim and made it 20 miles on pavement to a shop. A little bumpy, but . . . only at low speeds.
Had a front flat on my KTM690 (NOT from a pulled valve stem); Vee Rubber 401; went 100 miles on pavement to repair--took it easy on the curves, but . . . could hardly tell the difference from an inflated tire. In practice, a "run flat" tire, but . . . the bike weighs only 300 pounds.
Caveat: Do NOT run on flat tires, unless tires are specifically designed to run flat. Emergency expedient only. Best, safest practice: Repair and reinflate flat tires immediately.