Index Standards Manual 2003

GENERAL INFORMATION

DEFINITIONS SPEED SYMBOL SPEED CATEGORY LOAD INDEX UNITS IDENTIFICATION MARKINGS PASSENGER CAR TYRES GENERAL NOTES Tyre Size Designation Speed Limits Inflation Pressure Dimensions Load Capacities and Speed Limits Dual Fitments Camber Angle Caravans and Light Trailers Load Capacity – Inflation Pressure Chart for Standard Load Tyres Load Capacity – Inflation Pressure Chart for Extra Load/Reinforced Load Tyres Choice of Tyre Size Temporary Use Spare Tyres Static Envelope Contour Rolling Circumference Static Loaded Radius

PASSENGER CAR TYRES Tyres with Metric Designation Temporary Use Light Spare Tyres – S Type Temporary Use Spare Tyres – T Type ‘90’ and ‘85’ Series for Twin Application ‘80’ and ‘75’ Series ‘70’ Series ‘65’ Series ‘60’ Series ‘55’ Series ‘50’ Series ‘45’ Series ‘40’ Series ‘35’ Series ‘30’ Series ‘25’ Series CT Tyres COMMERCIAL VEHICLE TYRES GENERAL NOTES Tyre Size Designation Inflation Pressure Load Capacities Dimensions Choice of Tyre Size Rims Dual spacing Valves COMMERCIAL VEHICLE TYRES

C-Type Sizes on 5° Drop-Centre Rims – Radial ‘55’ to ‘70’ Series Metric Sizes ‘75’ to ‘80’ Series and Metric Sizes ‘85’ to ‘95’ Series Metric Sizes Ultra Light Sizes and CT Tyres Rims Minimum Dual Spacings Sizes on 15° Drop-Centre Rims – Radial ‘45’ to ‘70’ Series, Metric Designation ‘75’ , ‘80’ and ‘90’ Series, Metric Designation Normal Section Sizes – Code Designation Rims Minimum Dual Spacings Sizes on 5° Tapered or Flat-Base Rims – Radial Normal Section ‘80’ to ‘100’ Series, Metric Designation Rims Minimum Dual Spacings TYRES FOR SPECIAL APPLICATION Free-Rolling (FRT) Sizes - Radial Sizes on 5° Tapered or Flat-Base Rims - Radial Sizes on 15° Tapered Rims Multipurpose Truck Sizes, Metric Designation Radial & Diagonal Rims Minimum Dual Spacings THEORETICAL ROLLING CIRCUMFERENCE LOAD VARIATION WITH SPEED Load/Speed Table Notes AGRICULTURAL TRACTOR AND IMPLEMENT TYRES GENERAL NOTES  Tyre Size Designation  Inflation Pressure  Dimensions  Load Capacities  Tyre Size Selection  Basic Definitions : Front-End Loader Special Cultivation Work Speed Radius Index

TRACTOR STEERING WHEEL TYRES  Code Designated Normal Section size with service description and/or Ply Rating Marked  Rims  Variation in Load Capacity with Speed

TRACTOR TRACTION WHEEL TYRES  Code Designated Normal Section Sizes with Service Description and/or Ply Rating Marked, Diagonal  Code Designated and Metric Special Cultivation Work Sizes, Radial and Diagonal, Marked A2 Speed Category and/or PR Rating Marked

 Service Description Marked A2 Speed Category and PR Marked Sizes for Drive Wheels (SCW) Variation in Load Capacity with speed

 Code Designated ‘78’ Low Section, Diagonal with Service Description and/or PR Rating Marked

 Metric Sizes for Traction Wheels Speed Category A8, Diagonal

 Metric Sizes for Traction Wheels Speed Forestry Tyres – Speed category A8 – A2, Diagonal

 Code Designated Normal Section, Radial  Metric Sizes for Traction Wheels, Radial  Variation in Load Capacity with Speed for Drive Wheel Tyres marked A6, A8 and D Speed Category  Rims TYRES FOR CONSTRUCTION APPLICATIONS  Code Designated Normal Section Sizes, Diagonal, with Service Description and/or Ply Rating Marked, for Traction Wheels

 Code designated Normal Section and Metric Sizes, Radial, for Traction Wheels Speed Category A8 ; Diagonal, Bias-Belted and Radial.  Variation in Load Capacity with Speed  Rims

IMPLEMENT TYRES  Code Designated Normal Section Sizes, Diagonal with Service Description and/or PR Marked  Code Designated Normal Section Sizes Diagonal, with Service Description and/or PR Marked  Code Designated Low Section Sizes Diagonal, with Service Description and/or PR Marked  Metric Sizes with Service Description and / or Ply Rating Marked Diagonal and Radial.  ‘45’ to ‘80’ Series Metric Low Section Sizes , Diagonal and Radial Variation in Load Capacity with Speed  Metric Sizes with Service Description Speed Category D Variation in Load Capacity with Speed  Rims Code Designated Normal Section Sizes - Diagonal Code Designated Low Section Sizes - Diagonal and Radial Metric Sizes  Radius Indices

Tyres for Garden Tractors and Motor Cultivators Low Section Sizes, Diagonal, with Service Description and/or PR marked Rims

Multipurpose Agricultural Tyres Code Designated Normal Section Sizes, Diagonal with Service Description and/or PR Marked Rims

Trailer Tyres Service Description Marked G Speed Category CYCLE AND MOTORCYCLE TYRES GENERAL NOTES Tyre Size Designation Service Description Load Capacities & Speed Limits Tread Profiles Dimensions Centrifugal Radius Rims Inflation Pressure Load capacities & Inflation Pressure

CYCLE TYRES Narrow Section Sizes ‘Wired-Edge’ Sizes Rims

MOTORCYCLE AND MOPED TYRES Mopeds and Small Cubic Capacity Motorcycles up to 100 km/h Code Designated Sizes — Diagonal Rims Motorcycles — Rim Diameter Code 12 and Below Code Designated Sizes and Rims Metric ‘60’, ’70’, ‘80’, ‘90’ and ‘100’ Series — Diagonal Rims Motorcycles — Rim Diameter Code 13 and above Code Designated Sizes and Rims - Diagonal and Bias Belted Metric ‘55’, ‘60’ and ‘70’ Series — Diagonal and Bias-Belted Metric ‘80’ Series — Diagonal and Bias-Belted Metric ‘90’ and ‘100’Series — Diagonal and Bias-Belted Metric ‘40’ to ‘65’ Series — Radial Metric ‘70’ to ‘90’ Series — Radial Rims THEORETICAL ROLLING CIRCUMFERENCE

THEORETICAL STATIC LOADED RADIUS

LOAD VARIATION WITH SPEED

TYRE DIMENSIONAL ENVELOPE INDUSTRIAL AND LIFT TRUCK TYRES GENERAL NOTES Tyre Size Designation Tyre Dimensions Speeds Load Capacities Vehicles Choice of Tyre Size Interchangeable Tyre Sizes INDUSTRIAL TYRES Sizes on 5° Flat-Base Rims Normal Section Radial Diagonal Rims and Recommended Minimum Dual Spacings Wide Section Radial Diagonal Rims and Recommended Minimum Dual Spacings AGRICULTURAL IMPLEMENT TYRES AND SIDELOADERS Radial & Diagonal INDUSTRIAL AND LIFT TRUCK TYRES --- SOLID TYRES —

RUBBER SOLID TYRES GENERAL NOTES Tyre Size Designation Code Designated Sizes Metric Sizes Dimensions Dimensional Tolerances Load Capacities Speeds Wheels Surface Finish Bevelling Preferred Code Designated Sizes Non-Preferred Code Designated Sizes Metric Sizes RUBBER SOLID TYRES FOR PNEUMATIC TYRE RIMS GENERAL NOTES Tyre Size Designation Dimensions Load Capacities Sizes for Pneumatic Tyre Rims

HIGH-LOAD NON-RUBBER SOLID TYRES GENERAL NOTES Tyre Size Designation Load Capacities Preferred Code Designated Sizes Non-Preferred Code Designated Sizes Metric Sizes EARTHMOVING EQUIPMENT TYRES GENERAL NOTES Tyre Designation Inflation Pressure Rim Strength Operating Conditions-Definitions Variations in Load Capacities Haul Length and Speeds Load and Carry Service Delivery and Site-to-Site Transit EARTHMOVING EQUIPMENT TYRES Narrow Base Sizes Diagonal Radial Rims Wide Base Sizes Diagonal Radial Rims ‘70’ Series Diagonal Radial Rims ‘65’ Series Diagonal Radial Rims GRADER SERVICE TYRES  Narrow Base and Wide Base Sizes, Diagonal and Radial, and ‘65’ Series Sizes, Radial  Rims for Road Grader Tyres, Radial and Diagonal EARTHMOVER TYRES IN HIGHWAY SERVICE ‘95’ and ‘80’ Series Radial Rims COMPACTOR TYRES Narrow Base Sizes, Radial and Diagonal ’80’ Series, Radial and Diagonal TYRES FOR LIGHT EARTHMOVING EQUIPMENT ‘80’, ‘75’ and ‘70’ Series Radial Rims IDENTIFICATION CODES Service Tread Types RIMS GENERAL NOTES Strength Rim Contours Valve Holes Rim Measurements Rim Markings Drop Centre Rims Multipiece Rims Openings in Detachable Spring Flanges PASSENGER CARS Contour Gauge Drop Centre CT Rims COMMERCIAL VEHICLES 15° Drop Centre 5° Tapered Flat Base Semi-Drop Centre 5° Drop Centre Divided AGRICULTURAL TRACTORS AND IMPLEMENTS Divided Drop Centre 5° Tapered 15° Drop Centre Semi-Drop Centre 12, 13, 16 CYCLES, MOTORCYCLES AND SCOOTERS General Notes Cycles Measurement of Bead Seat Diameter and Circumference Straight-Side Rims Tubular Type Rims Crotchet Type Rims Motorcycles and Scooters Drop-Centre Rims for Mopeds Parallel Bead Seat Rim Circumference Drop-Centre Rims 5.375 I Divided Rims INDUSTRIAL VEHICLES AND LIFT TRUCKS 15° Drop-centre 5° Tapered Flat Base Divided EARTHMOVING EQUIPMENT Full Tapered Bead Seat 5° Tapered Flat Base Semi-Drop Centre Transverse knurling details 5° Drop-Centre

DIMENSIONS FOR RIM MEASUREMENT Tapered Bead Seat Rims 15° Drop-Centre Rims Rims with Two Demountable Flanges RIM VALVE COMBINATION RIM VALVE COMBINATION VALVE HOLE ENVIRONMENT VALVES GENERAL NOTES Designation of Valve Standards Valve Specifications Valve Caps Valve Holes Head for Clamp-In Valve VALVE CORE CHAMBERS Chambers for Long and Short Cores Large Bore Chamber for Long and Short Cores Thread Dimensional Limits PASSENGER CAR TYRE VALVES General Notes Tubeless Valves Metal Clamp-In Rubber Covered Snap-in Valves for Tubes-Rubber Covered COMMERCIAL VEHICLES TYRE VALVES Screw-on Universal Valves General Single Bend Double Bend Triple Bend One Piece Valves Hand Bendable Valves Tubeless Valves Single Bend Double Bend Triple Bend Quadruple Bend Straight Rubber Covered Snap-in for High Pressure TYRE VALVES FOR AGRICULTURAL TRACTORS Core Housing Rubber Covered Air/Water Valves TYRES VALVES FOR CYCLES AND MOTORCYCLES Cycles Metal Base Rubber Base Rubber Covered Motorcycles and Scooters Rubber Base Metal Clamp-in TYRE VALVES FOR INDUSTRIAL VEHICLES AND LIFT TRUCKS Rubber Base Valves TYRE VALVES FOR EARTHMOVING EQUIPMENT Tubeless Air/WaterValves Metal Clamp-In Large Bore Valves Core Housing Single Bend Triple Bend Tubeless Spuds Rubbered Spuds TYRE VALVE COMPONENTS AND ACCESSORIES Ring Washers Valve Spacers Valve Nuts Valve Caps Valve Rubber Grommets and O-Rings Valve Washers Rim Nuts VALVE PRESSURE RATINGS BY USE Tube Type Tubeless