Tyre Code Decoder

Inputs

Results

Decoded result
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Confidence
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Details

Segment breakdown
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Reference

Reference table
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Reference Table

InputDecoded result
225/45 R17 94W225 mm width, 45% aspect ratio, 17 inch rim, load 94, speed W
205/55R16 91V205 mm width, 55% aspect ratio, 16 inch rim, load 91, speed V
195/65 R15 91H195 mm width, 65% aspect ratio, 15 inch rim, load 91, speed H
265/70R17 115T265 mm width, 70% aspect ratio, 17 inch rim, load 115, speed T
LT265/70R17 121/118S265 mm width, 70% aspect ratio, 17 inch rim, load 121/118, speed S

Code Structure

Tyre Code Decoder splits the marking into recognized segments, explains what each segment means, and flags ambiguous or incomplete inputs.

How To Decode

  1. Enter the marking exactly as printed, including spaces, hyphens, suffixes, and units.
  2. Review the segment breakdown first, then compare candidates in the result table when more than one interpretation is possible.
  3. Use the cited standard or manufacturer datasheet before making safety, procurement, or compliance decisions.

Sources And Limits

Tyre sidewall marking conventions and public NHTSA tire identification guidance; verified 2026-08-26.

Decode logic

  • Normalize the marking, parse the known tokens, then return the decoded meaning with confidence and source caveats.

FAQs

Can this decoder guarantee the final specification?

Tyre Code Decoder explains the visible marking and highlights common meanings. Always confirm safety-critical or purchase decisions against the manufacturer data sheet, product label, and applicable local standard.

Why can one code have more than one meaning?

Many real-world markings are reused by different manufacturers, regions, packages, or standard systems. Use surrounding context such as package, size, voltage, country, and product family.

What is a good input example?

Use the complete visible marking, for example 225/45 R17 94W, including spaces, suffixes, and ratings when they are printed on the part.