We took delivery of our new BH 3400RL last December. I ordered the trailer with the axles upgraded to the 7000# w/G rated tires. I have them inflated to 108#. I check the air every time we move the trailer. We just returned from our first trip, round trip to Arizona ( a little over 2000 mi. ). We I got home we took her in for some minor warranty work. I also noticed what I think is excessive tire wear on the outside side walls of all 4 tires. When I pointed it out to the dealer he suggested I run with less air. This seems backwards for side wall wear. I ask that they check the axles and also make sure it is trailing properly, but have a sneaky suspension this won't happen. Has anyone out there had similar tire wear? And will I need to contact Heartland myself to pursue this issue?