Wore out three sets of tires already!
I think it's just the angle of the photo. It's plenty long for me. I did air it up to 40psi before I left for the trip. No rubbing on the stays. That gravel was pretty firm for the most part, but what you don't see in the picture are the larger gravel chunks around the curves of the trail. Either way, I'm going to try out some diamond tread street tires today and see if that makes any difference.That rear valve stem looks awful short. Did you checkie the air pressure before or after the trip? Cones adjusted good so under torque that big rear tire wasn't lightly rubbing on the stays? I know that kind of pea gravel is somewhat like walking in sand depending on how deep and loose it is. I doubt that tread is causing much of an issue on that small gravel. But it might on asphalt.