The tires handle climbs and rocks very well and feel very durable. In the mud they work very well in my opinion. In thick mud, as long as you have the power to accelerate the wheel, they'll scavenge and pull just as well as any of them. If you don't have enough wheel speed, yes they will stick together and not pull. Just step on it, pull it out and you're done. I will probably buy them locally next time as they were broken upon delivery and difficult to install at first. Another who couldn't be happier.