Disclaimer
General information only
TruckTireGuide.com provides general tire reference information for semi trucks and commercial vehicles. All content — articles, checklists, glossary entries, and calculator outputs — is for educational and informational purposes only.
Nothing on this site constitutes professional tire service advice, vehicle manufacturer recommendations, tire manufacturer instructions, DOT compliance advice, legal advice, insurance advice, or fleet maintenance policy. The site does not inspect tires, certify equipment, or issue service approvals.
Calculator and tool outputs are estimates
The calculators and tools on this site produce estimates based on the inputs you enter. They are designed to support planning and rough screening — not to replace weigh-scale readings, manufacturer load tables, certified tread-depth measurements, or professional tire inspection.
A calculator result showing that an estimated load appears to fall within a tire's published rating is not an approval to operate at that load. Actual axle weights, tire condition, road conditions, speed ratings, and carrier policy all affect whether a specific tire in a specific position is appropriate for service.
Where the line is
Reference content can help you understand what a tread-depth number means, what load range letter designations indicate, or what wear patterns are associated with alignment problems. It cannot tell you whether this tire, in this condition, on this vehicle, under this load, is safe to operate.
That determination requires physical inspection by a qualified tire technician, the manufacturer's specifications for the specific tire, the vehicle's axle rating, and the applicable regulatory standards for the jurisdiction and operation type. A reference site is a starting point, not the endpoint.
Regulatory information and timing
Federal and state regulations change. The regulatory information on this site — tread depth minimums, out-of-service criteria, load limits, inspection requirements — reflects publicly available rules as of the review date shown on each page. Pages are updated when known changes occur, but there may be a gap between a regulatory change and a page update.
Do not rely solely on this site for current compliance requirements. Verify applicable rules against the current text of 49 CFR, FMCSA publications, or your carrier's compliance program before making enforcement or compliance decisions.
Use professional judgment
Do not keep a tire in service because a website summary appears to permit it. When tire condition, inflation pressure, load capacity, tread depth, or compliance status is uncertain, get the tire inspected by a qualified professional or follow the controlling carrier policy.
When in doubt, the conservative choice is the right one. A tire removed unnecessarily is an inconvenience and a cost. A tire that fails in service is a safety event with consequences that extend beyond the vehicle.