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Tractors
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ADVICE

READING THE TECHNICAL DATA

reading the technical data

reading the technical data
DIMENSIONS CHART

 STAGE 1 

 

Identify the relevant SRI using the original size.

SRI: «Speed Radius Index» is a parameter used to calculate the theoretical speed of vehicles for homologation procedures in the European Union and for the interchangeability of different TYRE sizes.

step 1

step 1

STAGE 2

 

Based on the SRI obtained, establish the possible tyre size dimensions.

IMPORTANT :

• In no case does the SRI correspond to a specific tread circumference value. Its use in these tables is purely indicative.  Verification measurements must be taken.

• Any changes mean you must calculate the axle ratios, evaluate weight distributions and check that the rim widths and diameters are compatible  (see technical pages)

step 2

step 2
CORRECT STORAGE OF AGRICULTURAL TYRES

Some recommendations:

 

Agricultural tyres must be stored in clean conditions in dry, well-ventilated premises, away from direct sunlight.

 

They must be kept away from:

  • sources of ozone (electric motors, transformers, arc welding stations, etc.),
  • any chemical substance, solvent or hydrocarbon likely to alter the nature of the rubber,
  • any objects that could pierce the rubber (sharp or pointed metal objects, etc.),
  • flames or hot objects.

During storage periods, store agricultural tyres and inner tubes in a way that avoids any damage caused by tension or compression, keep them assembled and inflated if stacked, remove as much ballast as possible from vehicle-mounted tyres, and over-inflate by 0.5 bar (7 psi) in relation to in-service pressures.

 

Important

  • Never store bare tyres or fully assembled off-vehicle wheels in direct contact with the ground for long periods. You are advised to wear protective gloves when handling tyres.
  • Always remove tyres from rims before carrying out any work on them. Never heat, weld or solder a rim or wheel with a tyre fitted.
  • Always refer to the Michelin inflation chart to determine the correct pressure for your agricultural tyres. Under-inflation causes the casing to become exaggeratedly misshapen and will shorten the tyre's service life.
  • Over-inflation reduces the surface area in contact with the ground, causes a loss of grip, and makes the tyre more sensitive to impacts and cuts.
  • If loads are lower than those shown in our pressure/load charts, never inflate to lower than the minimum pressure shown in the tyre datasheets.
READING TYRE MARKINGS

tyre markings

tyre markings

tyre dimensions

tyre dimensions
VALVES AND RIMS CHARACTERSTICS

valves and rims

valves and rims