The online racing simulator

File Format Specifications (for programmers)

  • CMX format
    Documentation for the Car Model format. CMX files contain the 3D models for the cars in LFS and are distributed with the CMX viewer package.
  • RAF format
    Updated for version 0.5Z.
    Documentation for the Replay Analyser File format. RAF files contain replay telemetry and can be exported by LFS when viewing a replay.
  • SPR header format
    Updated for version 0.6B
    Documentation for the Single Player Replay file header.
  • MPR header format
    Updated for version 0.5X
    Documentation for the Multi Player Replay file header.
  • LYT format
    Updated for version 0.6H
    Documentation for Layout files.
  • CAR info binary format
    Documentation for car info files. These files can be exported from inside LFS and contain all information about a car.

SMX and PTH File Downloads and Specifications (for programmers)