The STI Out & Back Max tires feature an aggressive tread pattern and true sizing designed to power off-roaders through the mud, from large-bore UTVs to mid-size ATVs, and then get them back in comfort. The Out & Back Max tires use stepped-lug construction and a rugged carcass for trusted performance in the sloppiest conditions. Do your mud tires measure up to the Max? 1.5-inch tread depth in the center, and 2.0-inch depth at the shoulder. Stepped-lug construction builds lugs for minimum flex and maximum traction. Sturdy 8-ply carcass for low-psi operation and supreme flotation. True sizing means the competition doesn’t measure up to Out & Back Max. Image may not be actual item and may differ depending on your vehicle fitment. Before purchasing aftermarket parts for your bike, please confirm that your vehicle has USA-specified parts. If this is the case, parts ordered from a USA retailer may not fit correctly. Compare the microfiche for the USA model to your model to be sure they are the same. Perf-moto is not responsible for fitment issues caused by non-USA models. Please make sure you know the rules of your country before purchasing. Customer Service: Our goal is provide you with the best and easiest internet purchasing experience. Feedback & DSR ratings: ; We are committed to providing a great online shopping experience.