Originally Posted by drjdan

Before I got my bike I rented a Trek 7.5 which had 700x28 road tires. I drove off a paved parking lot into a gravel parking lot and had to walk it out. My new bike has Trek LT3 700x38 (they are a combo tire simular to the ones that come on the 2012 7500). I drove it on the same gravel parking lot and had no problem. I would think the rail trails could in some areas be simular to a gavel lot.