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World Touring Car Building Rules

🏁 Vehicle Basics

Essential requirements for your mod

Car Name Format

WT2_YOURCARNAME

Approved Vehicles

  • Must be a touring car. Learn more
  • Must be based on a real-life road car model
  • Drivetrain must match factory specification
  • Engine must match factory specification
  • Mod must be set to PRIVATE in the LFS mods system

Basic Setup

  • Vehicle Type: Touring car
  • Steering Lock: 20 degrees max
  • Transmission: Paddle Shift gearbox, sequential with ignition cut, sequential and H-pattern
  • Forward Gears: Six (6)

Obtaining A Mod To Edit

Important:The mod owner must permit 'derivatives' of their mod to be edited.

Derivatives are:

  • Any mod that is based on the original mod
  • Any mod that is based on a derivative of the original mod

Use the LMH tool to find mods that permit derivatives:

Driving Assists (5 options)

  • ABS
  • Live brake balance adjustment
  • Shift light
  • Handbrake
  • Starter motor

Drivetrain Options

  • Front-wheel drive (FWD)
  • Rear-wheel drive (RWD)
  • Four-wheel drive (4WD)

⚙️ Technical Specs

Engine, mass, and performance limits

Mass Requirements

Car Mass 1,150 kg (without driver/fuel)
Total Mass 1,220 kg (with driver, no fuel)
Fuel Tank 30 liters max
COG Height 0.270 min (above ground)

Important:COG test must be measured with the driver in the car, with tyres at 650 kPa and zero camber, using the ZERO SPRINGS TEST.

Weight Distribution

  • Front-engine: Max 50% rear axle
  • Mid-engine: 55% max front or rear

Engine Specifications

  • Cylinders: 3-8, or 1-2 rotor Wankel
  • Layout: Inline, Flat, or V
  • Size: 1400-7800cc
  • Power: 300 hp & 300 Nm max
  • Redline: 9500 rpm max
  • Inertia: 1.4 - 2.0 multiplier
  • Turbo: Allowed
  • Audio: Gasoline or diesel only

Suspension Options

  • MacPherson Strut (front & rear)
  • Double Wishbone (front & rear)
  • Trailing Arm (rear)
  • Pushrod/Pullrod (rear)

Suspension Mass Constant: 0.100 min

🛞 Wheels & Tires

Specifications for wheels and tire compounds

Wheel Specifications

Diameter 15" - 20"
Width 7" - 8.5"

Tire Specifications

  • Front Compound: SLICK R1 - R4
  • Rear Compound: SLICK R1 - R4
  • Width: 205 - 225
  • Profile: 35 - 45
  • Pressure: 0 - 670 kPa

Aerodynamics

FWD and RWD: Body Drag 0.400 N @ 1 m/s

4WD: Body Drag 0.365 N @ 1 m/s

All: Body Lift 0 N @ 1 m/s | Side Drag 0.800 N @ 1 m/s

Interior Requirements

  • Roll cage
  • Racing seat
  • In-car name/number info plate
  • Fully functional rear brake lights

🎨 Body & Visuals

Appearance and modeling requirements

Car Body Rules

  • Exterior must resemble real-life model
  • Fenders may be modified for tire clearance
  • Small touring car-style front wing may be added
  • Small touring car-style rear wing may be added
  • Tires must not clip through wheel arches at full lock

LOD (Level of Detail)

  • LOD1: Primary high-detail model (required)
  • LOD2: Shadow and collision mesh (required)
  • LOD3: Collision mesh alternative (optional)

Collision mesh must follow outer body lines of LOD1. Skin template must be applied to all LODs.

Mass Distribution Rules

  • All object masses must be within car's mass frame
  • Tube masses must follow LOD1 wireframe
  • All masses within LOD3 collision mesh
  • Wheel masses must not extend beyond LOD1 arches
  • Driver position: Left or Right (not center)

Skin & Livery

  • Must include functional skin template
  • Windshield banner with "World Touring 2000" logo
  • In-car driver name/number sticker (recommended)
  • No real-world company logos in LFS mods database
  • Real racing liveries: upload to lfs.net/account/skins