curl --request POST \
  --url https://api.iotools.cloud/v1/tool/tire-size-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "widthMm": "225",
  "aspectRatio": "50",
  "rimInches": "17",
  "speedMph": "60"
}
'

{
  "tool": "tire-size-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "result": [
      {
        "metric": "Sidewall Height",
        "value": "112.5 mm (4.43 in)"
      },
      {
        "metric": "Overall Diameter",
        "value": "656.8 mm (25.86 in)"
      },
      {
        "metric": "Circumference",
        "value": "2063.4 mm (81.24 in)"
      },
      {
        "metric": "Revolutions per Mile",
        "value": "779.9"
      },
      {
        "metric": "Wheel RPM at 60 mph",
        "value": "779.9 rpm"
      }
    ]
  },
  "credits_used": 5,
  "credits_remaining": null
}