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To simplify the process, tire manufacturers offer tread depths and compounds to match varying operating conditions and applications. For example, wheel loader tires include L2, L3, L4 and L5. The "L" indicates a loader tire, while the numbers correspond to increasingly deeper tread depths. Earthmover tires follow a similar nomenclature ranging from E2 through E5.

To determine which tire is the right fit, consider ground conditions, cycle times and speeds, traction needs, wear resistance requirements and climate.

"Tread pattern and tire grade affect traction, vibration level, overall comfort and tire longevity," says Pressley. "Using the wrong tread type can cause traction issues, as well as problems with dirt and mud ejection from the tread, and increased vibration in the machine."

If you aren't sure which tire is right for the job, consult with the OEM or tire manufacturer. This can help you avoid a costly mistake.

"There are many examples of improper selection that can 'make or break' machine performance," Pressley points out. For example, customers frequently request L4 or L5 tires for applications where an L3 would perform better and last longer. "Requests for an L5 are often made because of its harder compounds and thicker tread design. This can create a false perception that it will last longer. However, in the wrong application (e.g., high speed, load and carry), the L5 will build up heat faster and wear quicker than the L3. On the other hand, the L5 is a 'must have' tire in the right application.