LMGT3 Class Explained: Cars, Crews and Rules

LMGT3 Class Explained

The LMGT3 class is the GT category of the FIA World Endurance Championship and the 24 Hours of Le Mans. Introduced in 2024, it replaces the previous GTE class and brings global GT3 regulations to the world’s biggest endurance races.

LMGT3 features production‑based sports cars from major manufacturers, adapted for long‑distance racing.

What Is an LMGT3 Car?

An LMGT3 car is based on a road‑going sports car, but heavily modified for racing. GT3 regulations are designed to keep costs under control while allowing manufacturers to showcase their performance models.

Key characteristics include:

production‑based chassis
aerodynamic bodywork
traction control and ABS
powerful but reliable engines
Balance of Performance (BoP) to equalize performance

LMGT3 cars are slower than Hypercars, but extremely competitive within their own class.

Why LMGT3 Replaced GTE

The move from GTE to GT3 was made to:

reduce costs
increase manufacturer participation
align with global GT3 rules used in GT World Challenge, IMSA and other series
simplify the GT landscape in endurance racing

The result is a larger, more diverse GT field at Le Mans.

Manufacturers in LMGT3

Nine manufacturers contested LMGT3 in 2026:

Aston Martin
BMW
Corvette
Ferrari
Ford
Lexus
McLaren
Mercedes-AMG
Porsche

Lamborghini withdrew from LMGT3 along with its Hypercar programme. With nine marques and 25 cars at Le Mans, LMGT3 fields more manufacturers than any other class in the championship, and it was the largest class in the 2026 race. The class win went to the #33 TF Sport Corvette Z06 LMGT3.R of Ben Keating, Jonny Edgar and Nicky Catsburg — a first Le Mans class victory for the Corvette.

Drivers and Teams

LMGT3 uses a Pro‑Am format, meaning each car must include:

at least one Bronze driver
plus a second Bronze or Silver driver
with the remaining seat open to a Gold or Platinum professional

This creates strategic depth, as teams must balance:

pace
consistency
driver rotation
stint length
traffic management

Bronze drivers often play a crucial role in the outcome of the race.

Performance and Technology

LMGT3 cars typically feature:

Power: around 500–550 hp
Weight: around 1,245 kg before Balance of Performance
Top speed: up to 300 km/h at Le Mans
Electronics: ABS and traction control allowed
BoP: strict performance balancing to ensure close racing

BoP ensures that no single manufacturer dominates.

How LMGT3 Racing Works

LMGT3 cars race alongside Hypercars, which creates:

heavy multi‑class traffic
large speed differences
strategic overtaking
constant awareness for drivers

Teams must manage:

tyre wear
fuel strategy
Bronze driver time
night‑time stints
long green‑flag runs

Winning LMGT3 at Le Mans is a major achievement for both teams and manufacturers.

Why LMGT3 Matters

LMGT3 is important because it:

brings global GT3 racing to Le Mans
attracts many manufacturers
creates close, competitive racing
offers opportunities for amateur drivers
connects road‑car brands with endurance racing

It is the class with the widest manufacturer representation in the WEC.

How the Driver Rule Actually Works

The second Bronze-or-Silver seat is the detail that makes LMGT3 genuinely Pro-Am rather than nominally so. Without it, a team could put one amateur alongside two professionals and call it a Pro-Am entry.

The categories themselves come from FIA driver categorisation, which grades every licensed driver Platinum, Gold, Silver or Bronze. Minimum drive-time rules apply on top: the Bronze and Silver drivers must each complete a set portion of the race, so the classification cannot be a paperwork exercise.

Tyres and Homologation

Goodyear is the sole tyre supplier to LMGT3, on 18-inch wheels, with the contract extended to 2032. That is a deliberate contrast with Hypercar, which runs exclusively on Michelin.

LMGT3 cars are FIA GT3-homologated machines. That single fact is why the class works: the same car can race in the WEC, in IMSA, in GT World Challenge and at the Nürburgring without being rebuilt, because more than twenty sanctioning bodies accept the same homologation.