I had a Timberline and always felt the car was not as sure footed as it could be. In my opinion, the factory tires were suspect. They were not at the same level as the Timberline. I have an old Gen1 Raptor that has KO2 on it. They fit the simplistic primitive nature of the truck. I doubt I will ever put anything different on it.
I don't think I would like KO2 for the Exp. I get a lot of road noise as they age. If I kept my Timberline, I planned to get General Grabber ATX. That is what they put on Tremor now. I don't know if Grabber is as high of quality as KO2. Honestly, I don't think so. But the road manners on a Tremor are much better than the Timberline. I would want to get as close to that as I could. I know the suspension components were changed on Tremor but I also suspect the tires made a huge improvement. Plus you could go slightly larger (Tremor has 275/70 18) and it would still look stock but it would fill out those wheel wells better. To me, factory Timberline ties looks like you were sneaking into a campground at night and stole 4 tires from someone's old 1980 Jayco camper.
