How are you liking the KO3s? Have you run KO2s or other ATs in the past? Trying to get a sense for difference from prior generation and as compared to Toyo AT3 and Falken Wildpeak?
Before this I had BFG Trail terrain 275/50r20, SL load rating on some black rhino rims, so I can compare with those. They were installed on the vehicle when I purchased it, still have about 80% life left on them, I might sell that set, or keep it, haven't decided. They were good, but I wanted more sidewall, and I'd always be a bit concerned about them off-road, did a few nasty trails on them, but I rode them gently. They were excellent on pavement and never failed me, I did 4 off-road trips on them and a few long road trips.
I wanted something tougher, like the rest of the vehicle, overbuilt, so one less thing to be worried about in the wilderness.
To make the 34s fit I moved the liner forward instead of the heat gun, which worked out great, drilled like two new holes in the plastic liner to adjust it, took all of 10 mins per side.
KO3s feel much more planted on the road for sure, more noise, but not too much. The ride is a bit stiff, I did a mild AHC lift and put E rated tires so that's expected, but well within reason, I like how it rides, a lot tbh. Haven't gone off-road on these yet, just put around a 100 miles on dry pavement.
My previous wheels were heavy, but the tires were quite light for an AT, with current setup, wheels are much lighter but each tire is like 61lbs.
Net net I gained only 3lbs of unsprung weight per tire so I'm not noticing any drastic changes in MPG or acceleration, but I ride it like a big SUV and have reasonable expectations from it when it comes to speed, acceleration and on road agility.
I was choosing between Toyo AT3, BFG KO3 and Falken AT4. I think b/w these three narrowed down options for my purpose KO3 offers the best balance, don't think you can go wrong with any of the above, each has their strengths and mild weaknesses.
Per my research,
Falkens better on snow and wet conditions... But heavier by 6lbs per tire
Toyo all round good performance... Recent recall was a concern
KO3 great off-road dry performance and most robust out of the three
I think they will all struggle in hardcore mud.
Long post, sorry!