I run 35" BFG TA-KO2's (the all-terrains)
on my 2003 Jeep TJ on 15" rims with no issues.
Well... No issues until those BFG's get near their last 30% of tread life: Then the wobble starts and I rotate em' as a temporary fix.
Eventually I'll put the two best old tires on the rear and buy two new tires for the front.
Then I'm good again for many many miles. (but hey, if you got the cash buy em' 4 at a time!)
. . . Now granted, a lil' TJ doesn't eat BFG's like a 3500 Cummins but you get the idea.
Maybe this outlook will help...
While your searching the globe looking for the "magic fix" for death wobble, throw some fresh tires on the front axle.
They will never go to waste, and it will probably cure the problem (temporarily) thereby giving you time to find the real cause of death wobble.
Then, when you DO find the cure for DW, you can sell it to Ford, FCA, & Toyota and make millions!
Try this 'free' wobble-test:
Get your spare tire and a borrowed spare from a fellow Ram owner. Put the two odd spares on the front of your truck and then take a ride on your favorite stretch of death-wobble road. See it if doesn't cure the problem.