Overall tire size

Code snippets

curl "https://api.oanor.com/tire-api/v1/size" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/tire-api/v1/size", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/tire-api/v1/size");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/tire-api/v1/size",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "note": "Overall diameter = rim diameter + 2 × the sidewall height (section width × aspect ratio). A 225/45R17 stands about 25 inches tall and turns ~808 times a mile. The aspect ratio is the sidewall as a percentage of the width — a lower number is a shorter, sportier sidewall on the same rim.",
        "inputs": {
            "width_mm": 225,
            "aspect_ratio": 45,
            "rim_diameter_in": 17
        },
        "sidewall_in": 3.99,
        "revs_per_mile": 808,
        "circumference_in": 78.45,
        "overall_diameter_in": 24.97,
        "overall_diameter_mm": 634.3
    },
    "meta": {
        "timestamp": "2026-06-06T23:54:01.167Z",
        "request_id": "799d5db7-0e3e-4d6d-ad52-acfee9108c69"
    },
    "status": "ok",
    "message": "Tire size",
    "success": true
}