Ladoux

Ladoux

The proving ground at Ladoux is located at the Michelin Technology Centre, 10 km north of the Michelin head offices in Clermont-Ferrand (in the centre of France).


The site covers 450 ha.

20 test tracks, 45 km long in total, for grip tests on wet or dry surfaces, behavior tests, noise tests, comfort, etc.
Logistics: Recharge bay for electric vehicles, wash station, unloading ramp for vehicles, secure buildings

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Test tracks

Ladoux, France

High speed track

High speed track

  • Length: 7800 m
  • Width: 8-11.5 km
  • Banked turns (neutral speed of 100 km/h)
  • Straight: 1500 m
  • Standard motorway surface
  • Speed up to 250 km/h (more according to test conditions)
Dry dynamic platform

Dry dynamic platform

  • Length: 600 m
  • Width: 25 m
  • Slopes of 0.5 % to 2 %
  • Max track speed of 200 km/h
  • Standard motorway surface
Braking tracks

Braking tracks

  • Longitudinal hydroplaning and braking on wet surfaces
  • Passenger cars: Length: 400 m; Width 5.7 m
  • Trucks: 2 tracks 180 m long and 4-4.20 m wide
  • Water depth: 1 mm on average
  • Surface compliant with regulations R117 and R228
  • Certified UTAC - COFRAC
Wet handling rings

Wet handling rings

  • Radius: 110 m, 35 m, 42 m, 120 m
  • Automatic watering
  • Water depth of 2 mm - 8 mm
  • Surface: polished concrete, paving stones, asphalt concrete
  • A curved pool of water for lateral hydroplaning tests (depth : 8 mm)
Noise and comfort

Noise and comfort

  • Length: 600 m
  • Width: 18 m
  • Simulated road obstacles (representative of driving on European roads)
  • Surface: Single layer coat gritting 6/10
Dry handling track

Dry handling track

  • Length: 2770 m
  • Width: 8 m
  • Various corners with radii from 30m to 240m
  • Standard road surface
Wet handling track

Wet handling track

  • Length: 4100 m
  • Width: 7-9 m
  • Various courses: slow (inside) and fast (outside)
  • Automatic watering
  • Variable water depth (0.5-8 mm)
  • Various types of corners, radius of 20-100 m
  • Surface: grip representative of European roads
  • Pool of water in the straight line
Wet dynamic skidpad

Wet dynamic skidpad

  • Round skidpad of 120 m Ø
  • Automatic watering
  • Several concentric paths with a radius of up to 50 m
  • Surface: concrete with various levels of grip
Pass by noise

Pass by noise

  • Length: 20 m; Width 20 m
  • ISO 10844/2011 compliant track
  • Certified UTAC

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