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Buying heavy equipment tires involves more than simply matching a tire size. Whether you’re purchasing used OTR tires, grader tires, loader tires, or tractor tires, understanding the terminology used in the industry can help you make a better purchasing decision and avoid costly mistakes.
Below are some of the most common heavy equipment tire terms every buyer should know.
OTR stands for Off-the-Road, referring to tires designed for heavy equipment operating on construction sites, mines, quarries, farms, and other demanding environments. Unlike highway tires, OTR tires are built to handle extreme loads, rough terrain, and harsh working conditions.
Common equipment using OTR tires includes:
One of the first distinctions you’ll encounter is whether a tire is radial or bias.
Radial tires feature steel belts running perpendicular to the direction of travel.
Benefits include:
Bias tires use multiple overlapping layers of rubber-coated fabric.
Advantages include:
The right choice depends on your equipment, operating conditions, and budget.
Ply rating refers to a tire’s strength and load-carrying capability rather than the actual number of layers inside the tire.
A higher ply rating generally means:
Selecting the proper ply rating helps prevent premature tire failures.
Load rating identifies the maximum weight a tire can safely support when inflated to its recommended pressure.
Using tires with insufficient load capacity can lead to:
Always verify your equipment’s required load specifications before purchasing tires.
Tread depth measures the amount of usable rubber remaining on a tire.
For buyers considering used OTR tires, tread depth is one of the most important indicators of remaining service life.
More tread generally means:
However, tread depth should always be evaluated alongside the tire’s overall condition.
The sidewall absorbs tremendous stress during operation.
When inspecting a tire, look for:
Minor cosmetic damage may be acceptable, while structural sidewall damage often makes a tire unsuitable for continued service.
Not every damaged tire needs to be discarded.
Professional tire repairs can restore many tires to reliable service when the damage meets industry repair standards.
Quality repairs often provide an economical alternative to purchasing new tires while extending tire life.
Retreading involves replacing the worn tread while preserving the tire casing.
Benefits include:
High-quality retreads are commonly used throughout the construction and industrial equipment industries.
Heavy equipment tire sizes can appear confusing at first.
For example:
Each portion of the size identifies important information such as tire width, construction type, and wheel diameter.
Understanding tire sizing ensures proper fitment and equipment performance.
Many heavy equipment tires include an application code indicating their intended use.
Examples include:
You may also see numbers following these letters, such as L-3, L-4, or L-5.
These ratings generally describe tread depth and intended operating conditions.
For example:
Choosing the correct application rating helps maximize tire life and performance.
The casing is the structural foundation of the tire.
A quality casing is important because it:
Even when purchasing used tires, a strong casing is often more valuable than tread depth alone.
Understanding heavy equipment tire terminology makes it much easier to compare options and purchase tires that match your equipment and working conditions. Whether you’re looking for grader tires, loader tires, backhoe tires, or used OTR tires, knowing what these terms mean helps you make a more informed investment.
At Goodall Tire, we help customers across the country find quality used, repaired, and retread heavy equipment tires for a wide range of applications. If you’re unsure which tire is right for your machine, our experienced team is ready to help you choose the best option for your equipment and budget.
