A tire quote is only useful when it describes the right product. Learning to read the size on a tire sidewall helps you compare catalog entries and send a precise enquiry. Size alone, however, does not confirm vehicle compatibility, load capacity or suitability for a particular market.
What does 195/65R15 mean?
In a common metric size such as 195/65R15, 195 is the nominal section width in millimeters. The number 65 is the aspect ratio: the nominal section height expressed as a percentage of section width. The letter R indicates radial construction, and 15 is the nominal rim diameter in inches.
These markings describe dimensions and construction, not a complete specification. Tires with the same size can have different service descriptions, load versions and intended uses. Always start with the vehicle manufacturer’s approved specification rather than choosing a replacement only because its diameter appears to match.
Read load index and speed symbols separately
The service description commonly appears after the size and includes a load index and a speed symbol. These must be checked against the vehicle requirements and the confirmed product data. A catalog image is not a substitute for a current technical specification, and a speed symbol is not permission to drive at that speed.
The supplied VEVR catalog contains some inconsistent load, pressure and maximum-speed entries. Our HTML pattern pages therefore list reference sizes without presenting disputed values as verified specifications. Ask for a corrected specification for the exact pattern and size before using such values for a purchasing or fitment decision.
Why LT, C and ST markings matter
The catalog includes passenger sizes as well as LT, C and ST designations. LT and C markings occur on light-truck or commercial applications; ST identifies special trailer tires. Their intended uses differ, and matching a rim diameter does not make these tires interchangeable.
The VEVR C16 page gives passenger-car reference sizes including 195/65R15. The ZT701 commercial pattern lists C and LT examples, while the ZT301 trailer pattern lists ST sizes. These examples help you identify the relevant catalog section, not approve a fitment.
A clear checklist for your next tire enquiry
- Send the complete size and service description, preferably with a readable sidewall photo.
- Identify the vehicle or trailer application and the intended operating conditions.
- Specify the preferred brand and pattern, quantity and destination market.
- Ask for written confirmation of load version, rim compatibility and applicable documentation.
- Resolve differences between the catalog, sidewall and quotation before accepting the order.
Inflation should follow the vehicle manufacturer’s guidance and the confirmed application; a tire’s sidewall maximum is not automatically the recommended operating pressure. A qualified tire professional should check fitment. Explore the full tire catalog or send CAMPINTAL the complete requirement.
Sources & editorial note
Product examples are drawn from the supplied CAMPINTAL tire catalog (PDF) and the VEVR pattern pages. Factory descriptions refer only to the visible supplied imagery. General tire guidance is educational and does not replace the vehicle or trailer manufacturer’s instructions or professional fitment advice.
No independent product testing, certification or inventory verification is claimed. Request a confirmed specification for the exact tire before purchase. Contact the team about product details or corrections.
Have a specific tire requirement?
Send the full size, application, quantity and destination market. We will help you identify the product details to confirm.
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