Tire size comparison calculator

Open Tire size comparison calculator on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.

Tool capabilities

{
  "id": "tire-size-comparison-calculator",
  "category": "calculators",
  "built": true,
  "requirements": "Supports radial metric sizes with widths of 100–995 mm, aspect ratios of 10–100, and rim diameters of 8–60 inches in whole or half inches. These are calculation bounds, not a claim that every size exists. Results use nominal unloaded geometry and do not confirm vehicle compatibility.",
  "implementation": {
    "fields": [
      {
        "key": "referenceSize",
        "label": "Reference tire size",
        "value": "205/55R16",
        "type": "text",
        "help": "Metric radial size only, such as 205/55R16. This is the size the speedometer is assumed calibrated for."
      },
      {
        "key": "proposedSize",
        "label": "Proposed tire size",
        "value": "225/45R17",
        "type": "text",
        "help": "Optional P, LT and ZR markings are accepted. Leave out load indexes and speed-rating suffixes."
      },
      {
        "key": "dimensionUnit",
        "label": "Show dimensions in",
        "value": "mm",
        "type": "select",
        "values": [
          "mm",
          "in"
        ]
      },
      {
        "key": "indicatedSpeed",
        "label": "Indicated speed",
        "value": 100,
        "type": "number",
        "min": 0,
        "max": 1000,
        "step": "any",
        "help": "The speed shown on a speedometer calibrated exactly for the reference tire."
      },
      {
        "key": "speedUnit",
        "label": "Speed unit",
        "value": "km/h",
        "type": "select",
        "values": [
          "km/h",
          "mph"
        ]
      }
    ],
    "input": false,
    "live": true,
    "presentation": "metrics",
    "note": "Compare nominal unloaded dimensions, circumference and speedometer changes. Wheel offset, wheel width, tire-model differences, load, pressure and wear are not modeled. Clearance changes assume an unchanged wheel centerline and suspension. Results do not establish fitment, safety, approval or legality. Runs entirely in your browser.",
    "experience": {
      "automatic": true,
      "single": false,
      "inputMaxLength": 1000000,
      "inputMode": "text",
      "label": "Your text",
      "placeholder": "Type or paste your input…",
      "help": "Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.",
      "helpParts": [
        "Change the input or settings to update your result.",
        "Results update as you type.",
        "Up to 1,000,000 characters."
      ],
      "action": null
    },
    "mode": "automatic",
    "interactive": false
  },
  "execution": "Browser interface",
  "api": null,
  "browser_agent": {
    "supported": true,
    "name": "run_current_tool",
    "discovery": "WebMCP on the human page in a supporting browser",
    "verification": "See audit/API-AUDIT.md; availability is not verification"
  }
}

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