Technical Info and Definitions

  • Can I go to a lower speed rated tyre than what came on the vehicle?

    It is recommended that the replacement tyre size speed rating be equal to or higher than that of the O.E. tyre size speed rating. If a lower speed rated tyre is selected, then the vehicle top speed becomes limited to that of the lower speed rating selected. The customer must be informed of the new speed restriction. Contact your vehicle maker for their recommendation.

  • Can I mix radials and non-radials?

    tyres of different size designations, constructions, and stages of wear may affect vehicle handling and stability. For best all-around performance, it is recommended that all tyres be of the same size, construction (radial,non-radial) and speed rating.

  • Do you recommend Used tyres?

    Avoid used tyres - you can never know what hazards and abuse a previously owned tyre has suffered. Internal damage can lead to dangerous tyre failure.

  • Do you support Plus Sizing (Changing of Wheel Size to bigger one)?

    Please remember, Plus Sizing must be taken with proper care. When replacing tyres with optional size designations, be sure to check vehicle manufacturer’s recommendations (found in owner’s manual or on door sticker). Interchangeability is not always possible because of difference in load ratings, tyre dimensions, wheel well clearance and rim size.

    However, if you can provide the original equipment tyre size and the tyre size you wish to install, we can provide the tyre specifications and differences.

    If you need assistance locating a participating tyre retailer, please visit our website or call our toll free number at 1800 103 6424.

  • How do I determine if my current rim is approved for your tyres?

    The rim width range is extremely important. This range represents proper rim widths that will assist the tyre/wheel assembly in meeting its performance potential. To achieve the best balance between ride, handling and tread wear, select a rim width based on vehicle manufacturer’s recommendation.

  • How do I read the sidewall of my tyre?

    The side of a tyre contains information needed for your safety and that of your customer. Being able to read sidewall markings will help you better understand the performance of each tyre. It will also provide you with information when mounting and servicing the tyre.

    Passenger tyre Sizing
    The commonly observed sizing system used in India is of European metric as seen below.

    185/70R14 88H
     185 = Nominal section width in Millimeters
     70 = Aspect ratio aspercent (Section height = aspect ratio in % X Section width)
     R = Radial construction
     14 = Rim diameter in inches
     88 = Load index of the tyre
     H = Speed rating of the tyre


    Light Truck tyre Sizing
    Sizing for light truck tyres takes the performance requirements of the vehicle, and the tyres, into account. Light truck tyres have evolved along with the expanded applications of trucks and vans that have grown to be multi-purpose vehicles that we use for work, for recreation or as passenger vehicles. There are three primary light truck tyre sizing systems: Light Truck Metric, Light Truck High Floatation and Light Truck Numeric.

    Light Truck Metric
    This sizing system mirrors the P-Metric system for passenger tyres.

    LT235/75R15 LRC
    LT = Light Truck Designation
    235 = Section width in Millimetres
    75 = Aspect Ratio
    R = Radial Construction
    15 = Rim Diameter in Inches
    LRC = Load Range

    Light Truck High Flotation
    Light truck high flotation tyres have evolved as lower aspect ratio tyres became more popular on light trucks. The combination of lower aspect ratios and high flotation yielded better traction on sand and soft soil found in off-road situations.

    31x10.50R15LT LRC
    31 = tyre Overall Diameter in Inches
    10.50 = Section width in Inches
    R = Radial Construction
    15 = Rim Diameter in Inches
    LT = Light Truck Designation
    LRC = Load Range


    Light Truck Numeric

    This older system is still widely used, mostly on commercial vehicles.

    9.50R16.5LT LRD
    9.50 = Section width in Inches
    R = Radial Construction
    16.50 = Rim diameter in inches
    LT = Light Truck Designation
    LRD = Load Range



  • How do I read the DOT number?

    DOT signifies that the tyre complies with the United States Department of Transportation tyre safety standards, and is approved for highway use.

    DOT M5H3 459X 065

    The first two digits following DOT designate the tyre's manufacturer and plant code. The third and fourth characters denote the tyre size. The fifth, sixth, seventh and eighth (optional) characters identify the brand and other significant characteristics of the tyre. The ninth and tenth characters denote the week the tyre was produced. The final number(s) signifies the year in which the tyre was manufactured.

    For Michelin brand tyres, DOT markings related to the week and year of production will have an additional symbol for the decade of the 1990s. It will be shown as a triangle following these last three numbers.

    EXAMPLE: 065
    This would designate the 6th week of 1995.

    Beginning in year 2000, an additional digit was added to the serial number to allow the year of production to have two digits.

    DOT BEHY TTLX 0800
    Note: DOT is mandatory for tyres to be used in US and so some of the Michelin tyres sold in India, may not carry the letters “DOT’ though the manufacturing details are mentioned in the same order.
  • How much load/weight can my tyre carry?

    Never exceed the load-carrying limits molded on the sidewall of the tyres or the maximum vehicle axle load limit as shown on the vehicle tyre placard, whichever is less. Overloading builds up excessive heat in the tyre and could lead to failure.

  • What are zero pressure tyres and tpms?

    Zero pressure tyres are designed to operate for a limited time with little or no air pressure without causing damage to the tyre casing. In order to realize the zero pressure benefits, the tyres must be mounted on proper wheels.

  • What guidelines should I follow when mixing tyres on 4WD vehicles?

    If no instructions for tyre mixing appear in the vehicle owner’s manual, adhere to the following guidelines:

    • Do not mix sizes. All four tyres must be branded with the same tyre size.
    • Do not mix radial and non-radial tyres. All four tyres must be either radial or non-radial.
    • Be sure that the outside circumference of all four tyres is within one (1) inch of each other.
    • Do not mix tread pattern types such as all-terrain and all-season.
  • What is a Directional tread design?

    Tyres with directional tread patterns must be mounted so that the primary direction of rotation matches the directional arrows on the tyre sidewall. If all four tyres are the same size, directional tyres can be rotated front to back.

  • What is an Asymmetric tread design?

    Asymmetric tyres are characterised by different outside and inside tread pattern. One of the sidewall carry marking “Outside” and while fitting one needs to ensure that this side of the sidewall is fitted facing outside.

  • What is Excessive Spinning?

    Excessive wheel spinning, when freeing a vehicle from sand, mud, snow, gravel, ice or wet surfaces, can result in explosive tyre failure, causing serious personal injury or vehicle damage. Never stand near, or behind, a tyre spinning at high speeds when attempting to push a vehicle that is stuck.

  • What is Speed ratings?

    The speed rating of a tyre indicates the speed category (or range of speeds) at which the tyre can carry a load under specified service conditions. The speed rating system used today was developed in Europe in response to the need to categorize tyres into standardized speeds. A letter from A to Z symbolizes a tyre's certified speed rating, ranging from 5km/h to above 300 km/h.

    Speed Symbol L
    Speed (km/h) 120
    Speed (mhp) 75
    Speed Symbol M
    Speed (km/h) 130
    Speed (mhp) 81
    Speed Symbol N
    Speed (km/h) 140
    Speed (mhp) 87
    Speed Symbol P
    Speed (km/h) 150
    Speed (mhp) 94
    Speed Symbol Q
    Speed (km/h) 160
    Speed (mhp) 100
    Speed Symbol R
    Speed (km/h) 170
    Speed (mhp) 106
    Speed Symbol S
    Speed (km/h) 180
    Speed (mhp) 112
    Speed Symbol T
    Speed (km/h) 190
    Speed (mhp) 118
    Speed Symbol U
    Speed (km/h) 200
    Speed (mhp) 124
    Speed Symbol H
    Speed (km/h) 210
    Speed (mhp) 130
    Speed Symbol V
    Speed (km/h) 240
    Speed (mhp) 149
    Speed Symbol W   ZR
    Speed (km/h) 270
    Speed (mhp) 168
    Speed Symbol Y   ZR
    Speed (km/h) 300
    Speed (mhp) 186
    Speed Symbol (Y)   ZR
    Speed (km/h) Above 300
    Speed (mhp) Above 186
    (Consult tire manufacturer)
  • Where are your tyres manufactured?

    We are an international company, with manufacturing operations at 67 plants across 17 countries around the world. To meet the needs of our customers by providing more specialized tyre lines, please be assured that no matter where your tyres are manufactured, they are built to the standards that have made our products the benchmark for the industry.

  • Where can I find the DOT on my tire and what does it signify?

    The "DOT" symbol certifies the tyre manufacturer's compliance with the U.S. Department of Transportation tyre safety standards. tyres manufactured for use in the United States have the full DOT serial number located on one sidewall near the rim. A partial DOT serial number will appear on the opposite side of the tyre.

    Tyre Brand Name
    Severe Snow Service Symbol
    Original Equipment Approval Symbol
    (Porsch Shown)
    Tyre Line Name
    Int'l Compliance (E.C.E. Shown)
    U.S.D.O.T Compliance followed by Tire Identification Number
    North American Load and Pressure Marketing
    Tyre Size Designation (Euro Metric Shown)
    Service Description(Load Rating Speed Rating)
    Tyre Construction Materials
    UTQG Rating
    Construction Type
  • Where do I find more information on the Tweel?

    For additional information on Tweel, visit www.michelinmedia.com. You will not be able to download hi-res images, this is reserved for the media, but you should find the information you are looking for.