The AT2’s ride better and were much easier for the tire shop to balance correctly when compared to the KO2’s. Whether or not it was due to a problematic set of KO2’s, I can’t say. However, when picking each up, the AT2’s were noticeably lighter - despite both being e-rated. I won’t kid you - the KO2’s look much better on the truck:
...but, given the problems I had with my KO2’s, I was willing to sacrifice some looks for functionality. The KO2’s were pretty quiet, but the AT2’s are almost as quiet as stock, and ride almost as good as the stock tires as well (better than the KO2’s). However, by making the change, I’ve picked up the e-rating on the tires (sometimes I tow), have better offroad abilities than stock (have not experienced any punctures yet), have longer tire lifespan than stock, yet retain much of the nice road manners of a street tire. Our typical use consists of a long drive (300+ miles) to a destination followed by light to moderate offroading (enough to kill our previous Highlander hybrid), then lots of “around home” trips of 20 miles or less. True, I’m not using the LC to its’ full potential, but I like the vehicle (it’s my second). We don’t live in a snow area anymore, so I was able to jettison the spare wheels and Blizzaks. If I were pure street, I’d likely have gotten the Defender LTX’s, but these seemed better for our usage.
One additional note: these tires are the Michelin AT2 LT275/65R18E - they are LT tires with an e-rating. Sorry to confuse you in my earlier post.