My tires are jamming/getting stuck in the top of the rack.Updated 4 months ago

The racks are designed to cover a wide range of tire widths. Some wider tires will fit tightly in between the arms of the rack. As long as you can still release them by pulling on the handlebars with minimal force it's fine. It actually helps to ensure the bikes can't be easily dislodged. If you find you have to use excessive force to remove the bike you may need to change to a larger version of the racks.