531 Hauler

The 531 Hauler is a trailer which can be bought at the Boxed Cars store for 13,000 in-game money.

Description: "Featuring a tailgate and bogie suspension, this trailer will serve you humbly."

It features a tailgate that can be opened or closed like the Val's All-Purpose Hauler. It has four wheels unlike the Small Trailer, which only has two wheels. This trailer has the largest capacity among all trailers currently featured in the game. This trailer is the only one that currently features an advanced suspension system. It is also the only vehicle that does not have wheels under the bed. To respawn a trailer the player will need a Vehicle Spawner and $260. This trailer is a really beefy trailer, if you look, the wheels actually moved to the angle of the ground, providing suspension. Unlike the normal trailer, this thing can carry a ton. Just like any other trailer, it comes in many colors.

It is possible that the name of the trailer is in reference to the user Spacek531, who proposed the idea of the trailer to Defaultio in this tweet. The cost of the trailer in the game is exactly twice that of the proposed cost.