OffRoad tire Pressures
- Thread starter TheWraith
- Start date
Im used to running low on my other rig with beadlocks. 4runner was built for over landing and medium trails...
I have 285/75/17 KO2s. I got them because that seemed to be the most popular choice from the 5th gen 4runner community.
Sitting on a 17x9 wheel as it was tough to find anything good looking with a slimmer width.
I run 30 psi on road. Seems to be sweet spot for comfort with my heavy rig.
18 psi on fire roads and sand sucked (tried it once). I air down to 15 psi. On overnights it will be down to 12 psi until tires warm up to 15 psi.
I go very hard in the sand (40-60 MPH is average for me)... I’ve had three slow leaks already from under 1500 off-road miles. All from sand getting between tire and rim.
I’ve popped a bead on Gold Mountain (hard corner didn’t take bypass).
The worst part is I’ve shredded the sidewalls on the KO2s. This is because I run “low” per overlanding standards.
Ive ran much more off-road miles on various mud terrrain ties with 5-8 psi and haven’t shredded as much sidewalk as I did this past year on KO2s.
I haven’t tried crawling with 20 PSI (and never would)... but at 15 psi my KO2s barely hold rocks. Their sweet spot seems to be 8-10 psi.
Point is... you wanna run as low as possible in most cases... as 20 PSI sucks when going fast or crawling... but if your going any decent speed or doing and decent crawling... your going to pop beads or get leaks. So your stuck at 15-20 psi.
I gave up trying and got beadlocks. Switching to cooper Maxx to see how they do before I go back to mud terrains (which I don’t want to do on an over lander).
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jrandom
New member
No intent to start a lengthy discussion, but it is built for whatever you build it for
their are plenty around here across multiple different gens on some of the burliest or burly trails. A lot of it is the driver and not necessarily the truck. There are of course plenty of those that think they can buy into experience rather than earn it, which makes your statement much more valid 
What load range? Assuming E? They do come in C too, but I think you should clarify.
No intent to start a lengthy discussion, but it is built for whatever you build it for
What load range? Assuming E? They do come in C too, but I think you should clarify.
Load Range E.
No need for lengthy discussion... I agree with you 100%.
Stock KO2’s on 2021 TRDOR. 34 cold road, no airing down for washboard dirt roads and soft sand. So far no issues and really impressed with the stock suspension on these washboard roads. My previous 2007 Sport 4WD I would have to air down to 25 for comfort on the washboards, and for soft sand. Ive only had to put it in 4WDH twice, once for deep sand and once for a steep slippery rutted section (no airing down). The capability of this machine with these tires is astounding.
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Kamalani Mahie
New member
BFG 285/70/17 load range C
38 onroad, 18 offroad (usual numbers)
38 onroad, 18 offroad (usual numbers)
