I tried some fat tires from Bicycle Quarterly for the first time on the OR Grab Bag 300k. I changed to Mavic 719 touring wheels with wide rims in order to mount the wider tires. My light racing wheels have narrow rims and are not rated for 30mm tires. I noticed straight right away the Grand Bois tires roll real good and they also skid noisily especially on lightly graveled asphalt. They are comfortable and do a good job of smoothing out chipseal.