What is the Maxium Tire Size that can be used with your Upright Mounts Dave Updated September 01, 2017 20:11 Follow The maximum tire widths that will work with our current Upright Mounts are: HighRoad - 3.25" FrontLoader - 3" Raptor Aero - 2" Related articles My bike has 27.5 / 650B wheels, what setting should I use on the FrontLoader? Will a FatBike Fit the FrontLoader? I have Fenders on my bike, can I use an Upright style Bike Mount? The red knob that secures my bike on the FrontLoader isn't working, what do I do? Wheel and Tire Size Compatibility Comments 0 comments Article is closed for comments.