Certified Commercial Tire Service (CTS) - 300 Level

Certified Commercial Tire Service (CTS) - 300 Level


Companies that wish to take technician training to the highest level can participate in the Certified CTS Technician Program (300 Level). This program is designed for experienced employees with at least one year of hands-on experience. In addition to successful completion of the final exam, students must show proficiency in the shop by demonstrating the ability to perform various skills that must be witnessed and signed off on by a service manager or supervisor. Each student who successfully passes the course receives a certificate, 13 uniform patches, and a 2-year subscription to the bi-monthly publication, Commercial Tire Service Today.


In order to take the final exam, students must complete a training seminar led by a TIA-Certified CTS Instructor (400 Level).  These courses are held several times a year in Baltimore, Maryland and Denver, Colorado. 

The 18 Modules that make up the Certified CTS Program:

Module 1: Introduction
Addresses the Occupational Safety and Health Administration (OSHA) requirements for Personal Protective Equipment (PPE) and provides information related to workplace safety, proper lifting procedures, heat stroke and hypothermia.

Module 2: Tires
Covers tire construction, sizing and nomenclature, inflation pressure, load capacity and other sidewall information. Application-specific tread designs and rubber compounds are also covered along with other industry guidelines.

Module 3: Rims, Wheels & Hubs
Outlines the difference between rims and wheels including the nomenclature for both assemblies. It also defines offset on standard truck wheels/rims as well as outset and inset for wide base wheels.

Module 4: OSHA Regulations
Includes OSHA Regulation 29 CFR 1910.177 in addition to the OSHA Demount/Mount and Rim Matching Charts.

Module 5: Road Service Safety
Covers the various aspects of emergency road service including vehicle inspection, driver safety, jobsite assessment, and roadside service procedures.

Module 6: Jacking & Lifting, Lock-Out/Tag-Out
Outlines the basic safety guidelines and procedures for lock-out tag-out as well as jacking, lifting and supporting trucks, tractors and trailers.

Module 7: Wheel End Safety
Describes the procedures and potential hazards when inspecting wheel ends as part of regular tire maintenance including wheel-off prevention.

Module 8: RIST
Defines each step of the RIST procedure and how they relate to bolt tension and clamping force when installing rims and wheels.

Module 9: Hub-Pilot Service
Covers the step-by-step service and maintenance procedures for hub-pilot wheel removal, inspection and installation.

Module 10: Stud-Pilot Service
Covers the step-by-step service and maintenance procedures for stud-pilot wheel removal, inspection and installation.

Module 11: Demountable Rim Service
Covers the step-by-step service and maintenance procedures for demountable rim removal, inspection and installation.

Module 12: Single-Piece Demount & Mount
Describes the procedures and guidelines for demounting and mounting tubeless tires on single-piece rims with valve stem and band-mounted TPMS sensors.

Module 13: Single Piece Inflation
Defines the OSHA regulations for inflating single piece assemblies and the inspection procedures for identifying potential zipper ruptures or heat-damaged rims.

Module 14: Multi-Piece Demount & Mount
Describes the demounting and mounting procedures for 2-piece and 3-piece truck tire and rim assemblies.

Module 15: Multi-Piece Inflation
Defines the OSHA regulations for inflating multi-piece assemblies.

Module 16: Balance & Run-Out
Describes the principles of static and dynamic balance as well as lateral and radial run-out and the steps that technicians can take to minimize ride disturbances.

Module 17: Repair
Dedicated to the step-by-step procedures and industry guidelines for installing two-piece puncture repairs and reinforced shoulder repairs in tubeless radial truck tires.

Module 18: Charts & Tables
Covers the load/inflation and tire dimension charts from the Tire and Rim Association.

Other references in Certified CTS include:

  • RMA Care and Service of Truck Tires
  • TIA Tire Facts Card
  • TMS User's Guide to Wheels and Rims