BFG Ko2 tire pressure

No. Without the trailer, I run 'em at 40 PSI. And I have reset the TPMS at 40.

 

Depends on what type of terrain you are running, speeds, and your priorities.
For interstate and other fast running, heavy loads, and for better mileage and tire wear, then high 30's.
For rough roads, unpaved and bad pavement where you are keeping speed a bit lower and not maxxing out load, then 30psi grips nicely and is more comfortable.

 

JStarr - ya nailed it!

between our lighter trucks then a big old full size, and our island roads/life style (road, red dirt, sand, potholes, repeat)... I’ve found 30 psi is just about perfect ((road sofa)), anything higher and we’d be like “What’s wrong with these expensive shocks” lol

not to mention we go faster on the sand then we do driving around


shoots

PS- to stay on thread: I’ve gone through my second set of Toyo Open Country Extreme (35/12.5-17) with load rate of “E”... and when ya air them down nothing really happens and the E rating for our truck is just to stiff and gnarly

I’ve switched to the BFG ko2 with a load range of “D”... it’s night and day of the Toyo’s on the road,, I don’t feel a single bump/ripple/pothole... they just soak it up.

did I mention I saved 24 pounds per tire of roughly the same size by making the switch to KO2’s and their “D” load rating. That’s almost a hundred pounds static,, we won’t even try to explain how much that works out to as Un-sprung weight nor Rotating Mass/weight (Cuz I cant)

when it comes off roading, they actually air down, and make the ride sooo cherry

and trust me, any fear of a D ratings sidewall not up to rambling, them KO’s are tough enough. Or another way to look at it, if Ford puts them on there love child Raptor... it’s gonna be strong enough for our Taco’s

shoots

 

I try to run 36 front / 33 rear (give or take)

 

Never tried the D's. Probably hefty enough. I run the C's on my old Wrangler. Couldn't find the E's. Maybe D's are available, though it will be long time before I re-tire that one.
31 pounds cold is fine, though if I load 'em up I add some pounds, and if I go on sand or mud I'll drop some pounds.
One thing I find is strange is that on the Tacoma with 16" wheels and 265 75 R16 E KO2s when I run for a ways they go up to 32-33. The 4Runner with 17" wheels and 265 70 R17 E KO2s the pressure goes up to 34 psi. Can't understand why the 17s heat up more. Perhaps it's the brand of TPMS in the wheels? When I fill them the TPMS agrees with my multiple good gauges.
I used to ride motorcycles pretty fast, on track and mountain roads. We always used the formula of adjusting tire pressure so that the increase from ambient (not winter cold) to quick riding would increase by 7% to 10%.

 

JStarr - just saw your Q?

on the load ratings: I love “C”s, and wanted a set this time around too,, but it seems unless ya go with a true off roader (let’s say Mudder or Crawler),, it seems in the AT world, almost all the manufacturers have stopped making “C” in their AT tire line up (I could be wrong, but I couldn’t find any)... hence why I went with “D” load rating; almost as soft and light as the C’s. It seems in the mileage war and guarantees, the tire companies have gone to E’s to cover their butts.

On the PSI Q? There’s a lot of factors that come into play. Example could be like let’s say on the 16’s there’s more tire/rubber and air volume,, where as on the same height tire on 17’s there is less of everything above, so in turn could and will heat up faster.

but... I’d say the biggest cause of that heat difference between the Taco and the 4Runner: Weight !
The 4Runner’s are a lot heavier than our Tacoma’s (hence the bigger brakes lol). And weight equals friction, and friction turns to heat.

I’d be willing to bet, if ya could switch out/swap the Tacos and 4Runner wheels set up,, you’d get the same temps per rig as before.

Hope that helped

shoots

 

Could very well be weight. I will try to remember to keep an eye on the Tacoma pressure next time I run a heavy load. Though I'll bump the starting pressure a few pounds then...

 

What do you all normally run in snow/icy conditions? I have KO2s 265/70/R17 C rated tires. I know I probably don't want it above 40 PSI, but do I necessarily need to have it as low as 30 PSI?

Last winter I ran my Toyo Open Country H/T 265/65/R17 at 38 PSI and had no issues. Curious if the KO2s require something different.

Thank you!

 

I run mine at 32 FR / 33 rear. Normally I’m around 35 in the summer but air down slightly for snow conditions. It seems to run better and grip more.

 

My K02s feel like I got sliders when it rains

 

You know, I hesitated from buying these tires because I saw many comments like this. But then I noticed that basically every Tacoma, 4Runner, and light pickup truck around here had a set of KO2s.

I drove around in fluffy snow, as well a compacted snow, and also ice, and didn't notice a single issue. I'm curious how different it would feel with a dedicated set of winter tires would be tho

 

Your truck is so light that 35 in the front and 32 in the rear will work fine, if its really crappy out I go 30 ps

strange, mine hook up no problem. Never had an issue in the rain.

 

I have 275/70/17 load E. I’m not sure if it’s because I have no weight on truck bed. But it’s slippery

 

Your OEM is not P265/70R16 SL(p-metric).
OEM is a 265/70R16 112(euro-metric).

 

Here’s the correct one then:

 

What’s the link you are using for the conversion on tiresize.com?

 

Ty

 

I'm always quite surprised how high tire pressures are on the 2nd and 3rd gens. On my 1st gen with KO2 C load in 31X10.5X15, I run 25F 24R hot which is confirmed by doing the chalk test. After 6k on these new tires, the wear is perfect across the tread. I think the stock tires per the door jamb says 26F26R though they aren't a really good guide since they are completely different tires.