A tie-down system for a vehicle transporter comprises a tie-down apparatus for securing a vehicle to a longitudinally-extending elongate vehicle transporter, comprising a vehicle support assembly, including a front deck and further including a rear deck that is variably positionable with respect to said front deck. At least four variably positionable securement devices are associated with the vehicle support assembly and attachable to the vehicle. A respective flexible tension member portion is interconnected with a respective one of each of the four securement devices to enable nonuniform variations in relative positions of the securement devices, each tension member portion capable of exerting a pull-down force on a respective one of the securement devices. A tension-applying mechanism is interconnected with each tension member portion to adjust the pull-down force on each of the securement devices and a tension-equalizing mechanism, interconnected with each tension member portion, capable of automatically distributing tension applied by the tension-applying mechanism among each tension member portion so as to substantially equalize said pull-down force automatically with respect to the four securement devices despite nonuniform variations in the relative positions of the securement devices, the tension-equalizing mechanism further capable of maintaining the substantially equalized pull-down force during and after adjustments of the relative positions of the front deck and the rear deck.