Issue with BFG KO2s and TRD Pro 17s 2020 TRD OR

Just mounted new wheels and BFG KO2 265 70 17 C rated tires on my truck. The first two days they seemed fine but today while I’m driving it seems like things have gotten a little too bumpy. My steering wheel isn’t shaking or anything but I can feel it in my hands and in the seat. It’s not a vibrating type feeling but definitely doesn’t seem like it would be very comfortable on a highway trip at all. It wasn’t really that comfortable in town today when I was driving as well.

I’m just not sure how things would change from the first two days I had them on? I barley have driven on them and haven’t done any off roading.

I guess I could take it back Monday to get the balancing checked...

It seems like when I get out of the truck I can still feel the bumpiness in my hands.

 

Check pressure. Do the chalk test. Sounds like pressure may have gone up and it’s making for a stiff ride.

 

I didn’t do a manual check but the computer showed the same pressure 39 to 40 as it did when I got them.

I’m not sure what a chalk test is but I’ve seen in mentioned. I’ll look it up and try it out.

 

39-40 seems high for an AT tire.
I run mine 30-33 psi (Not KO2s, but other AT tires I have ran are around that range).
Do a chalk test like the previous post said.

 

agree, if I wanted good mpgs with a AT I’d run high. But if I also wanted good mpg I wouldn’t run AT.

I run my duratracs at 35. I Need to do a proper chalk test also..

 

I’m on my third set of KO2s for my 2016 OR with the same rims, you have your tire pressure way too high. I run mine at 32 cold PSI.

 

I was checking the computer on the truck while driving so wouldn’t that be the warmer tire pressure? Not sure when the computer gets the reading. I’ll do a cold manual check with a pressure gauge to see what that shows in the morning just to be sure what the tire shop put them at.

I hope the tire pressure is the issue because I don’t want to go back to get them checked a million times lol.

 

I live in the South, my tire pressure would probably get up to 34 warm and if I was taking a long trip MAYBE get to 36, but by that time my ass is already sore from the long drive and my hand tired from steering that I probably don't notice the roughness setting in.

Cold it's normally about 29-30 psi.

 

Im in South Carolina so I’m the south as well. It seems y’all are setting yours around the same as the stock tire pressure for the off road wranglers.

 

I don’t mean to derail the topic of the OP, but I had a question about bigger tires. Yesterday morning I got the TRD Pro 4R wheels and 265/70/17 Nitto Terra Grappler G2s installed. The tire is 1” bigger than my stock tire. Does this mean my speed, MPG, etc. are different than what my truck is calculating because my truck thinks one rotation is a different distance? Thanks.

 

Duratracs have rounded shoulders, don't bother with the chalk test. Auditing the pressure may be a good idea for your particular setup but if the tires are remotely new, the chalk will be misleading. I ran 35 in both the 33x12.50R15s on the tj and 285/70-17s on the Silverado and they wore just fine. Freakishly well on the jeep, actually.

OP: you may have flung a wheel weight or part of the bead wasn't seated and now it is, who knows. After you lower the air pressure to normal (it doesn't need to be that high, it's a tacoma) and spend some time on the highway getting them hot, then consider getting them rebalanced. Don't forget how jittery an empty truck is to begin with plus you just added a lot of mass that the stock shocks have to tame. People complain about the stock shocks all the time, i like them (after accidentally jumping a railroad crossing) but I have yet to change from stock wheels & tires. Maybe you're just being hypersensitive because you just made a big change? I'm absolutely horrible for being that way.

 

Noted. Thanks.

 

It could be I’m just being hypersensitive but I don’t remember it feelings like this when they were put on. Guess time will tell.

Also I think there’s isn’t much of a weight difference with my set up. I think the KO2s are only 3 or 4 pounds heavier per tire and I believe the wheels are the same weight as the stock ones. I could be wrong but that’s what I read on the research before getting them. Maybe 4 pounds per tire more is a lot?

I wish I knew someone else with a Tacoma around here I could compare with to make sure I’m not just being dumb in my own head.

 

Another thing you might try is loosen your lug nuts and re- tighten. Do not use an impact on them. Then torque to factory specs.

 

Mine is the same. My k02s are bouncy as hell.

 

KO2's are a really good offload tire but the rubber compound is very stiff hence the "road feel" in daily driving. The other issue with this tire compound for those of us that live where we get lots of ice on the roads in the winter time is that stiffness is magnified on ice resulting in less grip which is why i did not buy another set when they wore out.

 

+1. And do it with the tire off the ground, don't be stupid, hahaha. If you're alone, click it to 4hi when you park and pull the parking brake. Just don't forget to put it back in 2hi when you're done.

Op: you said C-rated so I figured they were the 50lb LTs. Stock tires are 35lb. Good for highway comfort and mpg but this is not a discussion on pros/cons of weight, that's a well worn argument for other people. It was just something to think about when figuring out your troubles. That's all.

The 16" pros are like 4lb lighter than OR 16s, not sure about the 17s. A 30% heavier, significantly stiffer tire will be noticeable no matter what. It's a give-and-take, that's how the game goes though, we all deal with it but I bet your truck looks way better now! Get off here, go drive it and show it off!

 

Could be just a super stiff ride I guess but even on the newly paved smoothest road it still feels too stiff for me. I guess if this is normal then might have to go back to stock because it might just be unbearably stiff. The stock tires were even somewhat stiff over little bumps and things in the road but these are a new level of stiff.

The odd thing is though that these tires take the little
Bumps better than the stocks but the ride overall feels extremely harsh.

 

Yes, you can buy a tool to adjust your ECU to compensate, but there will be a very minimal difference at all times if the computer doesn’t know you’re running a bigger wheel with a bigger tire.

 

Tirerack shows the stock tires to be 42 lbs and the KO2s to be 46lbs. I did see Amazon shows 35.5 pounds for the stocks so not sure which is correct.

The TRD Pro 17 wheels I have on show that they are 25lbs which seem to the the same weight or maybe a tad less than the stock OR wheels.