I don't have any experience with those particular tires but have had issues in the past with folded tires. The "crease" from being folded needs to be straightened or it can blow off the rim while inflating. Massage the creases out to get the bead as round and straight as possible. Set them out in the sun to heat 'em up so they take a more round profile. Being folded and crammed in a box they get misshapen and can be hard to mount. Use tire talc on tube and inside of tire and inflate slowly making sure the bead is even all the way around the tire on both sides. Maybe set them in the sun partially inflated to help them regain their shape for a while before finishing inflation. Inflating the tube inside the tire and letting it sit for a few days without mounting on rim can help it take shape again too. This has worked for me in the past with uncooperative tires. Good lu