BFG AT KO2 285/70/17 C load range!!!

Give it a go! You won't know until you've tried them. Everyone's taste is different, hopefully it works out for you.

 

Really happy that I found you!
I’m torn between 275 KO2s in E load and 285 KO2s in C load. I’m running stock set up but looking to get a suspension lift when getting new tires. It seems like 275 is the perfect in-between size, but I am not happy that they only come in E load because of the weight. Do you feel like the weight difference impacts comfort/MPG/driveabilty more so then the actual size difference? Any advice would be appreciated!

 

I've ran both on stock suspension. 275 E's were a comfort nightmare. They rode like shit. 285 C loads are still quite a bit more stiff than factory, but definitely a huge improvement to me over the E's.

You will need a CMC to fit the 285's without a lift. That's why I did. Definitely worth it. Gave someone less than $200 and he knocked it out in 3 hours and did a beautiful job.

As far as MPG and acceleration, I would say it's about the same. I have not noticed a difference between the two. The biggest difference is COMFORT due to the stiffness.

 

If leaning on staying stock-ish 255/75r17 KO2s are available in C-load and pretty light by comparison. Similar overall diameter to 275s but 2cm narrower, which means they rub less.

 

Thank you for replying!

This is super helpful, it sounds like weight is more impactful than the size. I’m definitely going to be getting a suspension lift before getting either 275s or 285s - leaning towards bilstein 6112/5160. Do you think I will still need a BMC for the 285s if I get about 1.5-2 inches of lift?

Size wise though, it doesn’t seem like 275/70r17 is that much smaller than 285/70r17, so that makes me want to lean more towards the tire that is lighter in weight which is the 285/70r17 in the c load option... and 285s looks great haha.

As for MPGs and acceleration, I definitely expect the two to be worse than stock, but happy to hear that you don’t think that the 285s are a lot worse than the heavier but smaller 275s.

 

hi there thank you for the reply! I’m definitely going to do a modest suspension lift when getting new tires! But I would definitely consider these is staying with the stock suspension!

 

They still look good on a modest lift. 2.25" lift up front, 2" lift in rear on 255/75r17 KO2s in C-load for reference.

 

these do look great as well! Are you happy with them so far? How are they on-road and off-road?

 

Are you keeping OEM wheels? This plays a massive role in the rubbing situation. You need enough backspacing (determined by offset and wheel width) to not rub on the suspension itself (upper control arm), but if the wheels stick too far out then you are more likely to rub as well. I’m running 17x8.5 wheels with 0 offset. Seems like the sweet spot is this same size with 0 or -12 offset.

You may not rub the 285’s right away with a 2” lift but as soon as your wheels are turned at an angle and your suspension compresses 2”… you’re rubbing. Just something to consider. Alignment has a lot to do with it too - specifically caster (how far forward the wheel sits inside the wheel well away from the cab mount).

There’s quite a few parts to consider. I’m happy to offer whatever limited knowledge I’ve gathered around here the last few years if you want to message me…

For reference, here is a before and after of the front driver’s side 285 tire rubbing before and after CMC. This is with the steering wheel turned about 40% to the left. Not MAJOR but worth doing the CMC. Again this is with no lift!

 

KO2s are great on and off road with a few caveats. After 25-30k miles, their wet weather tractions turns poor, lots of slippage. So I swap them out every 2 years. Yes they will last way longer, but the wet weather performance degradation isn't worth it to me in a rainy area. However, with plenty of tread life left they will still get a good amount second hand and then I'm always rolling on fresh rubber. It should be obvious, but they are ATs, great off-road in AT conditions, but if that includes heavy mud then an MT or more aggressive tire would be better. For a decently aggressive AT they are very quiet on road with good on road tire manors. My Toyo AT3s are much louder on the highway.