Rack strap extension systems for vehicle bike racks

Rack system for a vehicle including a vehicle body forming an edge and also including a body accessory forming a protrusion on the vehicle body. The rack system may comprise a trunk rack configured to be positioned adjacent a rear end of the vehicle. The rack system also may comprise a strap assembly connected or connectable to the trunk rack. The strap assembly may be configured to extend over the protrusion and engage the edge of the vehicle body, to form a connection between the trunk rack and the vehicle. The strap assembly may include a strap and a spanning member. The spanning member may be configured to span the protrusion and support the strap in a spaced relation to the protrusion, such that the strap assembly can be tensioned without applying pressure to the protrusion.