Helpful poll. Apologies for the necropost. I have a 2023 TRD ORP arriving next month and I won't want to be on the stock all-season tires for long. I have spent way too much time going down the P-metric vs. LT rabbithole. I am going with A/T tires.
I think I may indeed go P-metric, and I go offroading several times a year, mostly in Utah/Colorado deserts and mountains. I do value on-road drivability, and I'm leaning away from the LT E Range club. I've seen some people claim they'll only buy E-range LTs, even on lighter vehicles like 4Runners, and claim that you'll just pop P-metrics the second the pavement ends. It's my understanding that E-range tires are mainly to support large weights, yet people often claim they're exclusively buying them in relatively light vehicles for extra offroad sidewall puncture protection. I've found a thread where a Falken rep claimed the Wildpeak had identical sidewall protection in all varieties, from SL to E. Meanwhile, in my own experience, I took my '99 4Runner on half of Hell's Revenge on P-metric all-seasons, among several other trails, with no result. As far as my own uses, moderately rocky trails can happen, I err on the side of slow and careful, I avoid tree roots and other dangers, and in 11 on-and-off years I have never had an offroad tire failure, regardless of tire type. If I recall correctly, the TRD PRO model even comes on P-metric tires.
Load Range C LTs almost started looking like a solid middle ground (on the few A/T tires that offer them in factory size). Someone pointed out that BFG KO2's in Load C are load index 112--which is actually lower than the load index 113 A/S's the 4Runner comes on.
Wildpeak AT3W's, Open Country ATIII's, and the venerable KO2 seem like the best options available to me. Some offered P-metric SL, some LT Load C's, all offered in an LT Load E as well.
Given how many 5th gens are sold and offroaded, I feel like I'm the 100,000th person to have gone down this path of excessive research and overthinking!
For me, someone would have to prove that whatever popped their P-rated tire offroad wouldn't pop an E. Yes, I get the sidewalls are much thicker in an E tire. I'm not debating they aren't stronger. However, I went up one tire size to a 285/70 4-Ply Maxxis AT that ways only 44lbs and noticed a difference in overall power, huge difference in power towing my trailer up hills, and MPG loss. I have a set of 285/70 BFG KM3s that I got for free just sitting in my garage and have zero interest in running them because they are an E that weighs 70lbs a piece. I ran a C-load KO2 before the Maxxis and the difference in ride was very noticeable (for the better) with the lighter load Maxxis. Not to mention the cost difference. An E is not worth it for a mostly road vehicle that wheels even a handful of times a year, IMO.
But hey, that's just me.