OEM & alternate tire sizes by vehicle

Tire Size API

Name: Tire Size API
Brand: API Codex
SKU: tire-size-api

The Tire Size API gives you OEM and alternate tire-size fitment data by vehicle. Browse makes and models, look up the fitment for a specific vehicle, or search by make, model, year or tire size.

Each record carries year, make, model, trim/submodel, the OEM tire size and any alternate sizes. Read-only and edge-served for fast "will it fit?" lookups.

Get a free API key Read the docs

Free tier included, no credit card required. One key works across all 49 APIs.

At a glance

Fitments: 580+
Response Time: <40ms
Makes: 36

Key features

List all makes
List models for a make
OEM + alternate sizes for a specific vehicle
Search by make, model, year or tire size
Narrowing-query search with clean 400 errors

Built for

Tire shops and e-commerce filters
Fitment "will it fit?" widgets
Fleet maintenance tools
Vehicle service apps

Try it

Build the request for your data

Edit the parameters below and see the exact curl command and JSON response you will get. No key required to preview.

GET/v1/by-vehicle

Open in Playground

Parameters

make

model

Request · HTTP

GET /tires/v1/by-vehicle?make=acura&model=nsx HTTP/1.1
Host: api.apicodex.io
Host: api.apicodex.io
X-Api-Key: YOUR_API_KEY

Response · JSON

200 OK

{
  "count": 1,
  "limit": 20,
  "results": [
    {
      "year": 2022,
      "make": "Acura",
      "model": "NSX",
      "trim": "Acura NSX Type-S",
      "tire_size_oem": "245/35R19",
      "alternate_tire_sizes": "305/30R20"
    }
  ]
}

Run it with your key

Documentation

Tire Size API Documentation

The Tire Size API gives you OEM and alternate tire-size fitment data by vehicle. Browse makes and models, look up the fitment for a specific vehicle, or search by make, model, year or tire size.

Base URL

url

https://api.apicodex.io/tires

Authentication

Create a free key at dash.apicodex.io and send it on every request: an X-Api-Key header, or an ?apikey= query parameter. Calls without a valid key return 401.

headers

GET /v1/by-vehicle?make=acura&model=nsx
X-Api-Key: YOUR_API_KEY

Request and response

Illustrative values. Confirm current endpoint behavior, quotas, and data freshness in the API documentation before production use.

request · http

GET /v1/by-vehicle?make=acura&model=nsx HTTP/1.1
Host: api.apicodex.io
X-Api-Key: YOUR_API_KEY

response · json

{
  "count": 1,
  "limit": 20,
  "results": [
    {
      "year": 2022,
      "make": "Acura",
      "model": "NSX",
      "trim": "Acura NSX Type-S",
      "tire_size_oem": "245/35R19",
      "alternate_tire_sizes": "305/30R20"
    }
  ]
}

Code examples

cURL

curl --request GET \
  --url 'https://api.apicodex.io/tires/v1/by-vehicle?make=acura&model=nsx' \
  --header 'X-Api-Key: YOUR_API_KEY'

Available Endpoints

GET /v1/makes

List all makes.

/v1/makes

GET /v1/models

List models for a given make.

/v1/models?make=acura

GET /v1/by-vehicle

OEM and alternate tire sizes for a vehicle (make + model required, year optional).

/v1/by-vehicle?make=acura&model=nsx

GET /v1/search

Search fitments by make, model, year, tire size or free text (narrowing query required).

/v1/search?size=215/45R16

Request Parameters

Optional parameters

make Make (exact; required for by-vehicle).
model Model (exact for by-vehicle, partial for search).
year Exact model year (1900-2100).
size Tire size; matches OEM or alternate sizes (e.g. 215/45R16).
q Free-text match (3+ chars to qualify as narrowing).
limit Max results (1-25, default 20).

Choose the right dataset

When to use Tire Size API

Best fit

Use it for fitment widgets, tire-shop search, and OEM or alternate-size lookups.

Consider an alternative

Choose Advanced Vehicle API when tire fitment is only one part of a multi-vehicle product.

Compare the supported records, quota, and current plan terms in the API catalog.

Pricing

Tire Size API Pricing

One key, one subscription, all 49 APIs. Start free and upgrade when you grow. No minimums, no lock-in.

This API costs 1 credit per request. Credits are shared across every API on your plan.

Estimate your monthly cost

Drag the slider to match your expected request volume. We will recommend the cheapest plan that covers it.

Requests per month10,000

Recommended plan

Starter

$29.99 /month

Credits used10,000

Credits included50,000

Cost per 1K requests$0.600

Choose Starter

Free

1,000 credits · ~1,000 requests/mo · 2 rps

All 49 APIs included
No credit card required
Full documentation and examples

Start for free

Starter

Popular

$29.99/month

50,000 credits · ~50,000 requests/mo · 10 rps

All 49 APIs included
Email support
Usage dashboard and analytics

Start with Starter

Pro

$99.99/month

250,000 credits · ~250,000 requests/mo · 25 rps

All 49 APIs included
Priority support
Up to 5 API keys

Start with Pro

Need a different plan?

Tell us about your API, volume, or support requirements.

Coming soon · MCP

Use the Tire Size API from your AI agent

The API Codex MCP server will expose this API, and the other 39, to Claude, Cursor and any MCP client as tools. Same key, same credits, one config entry.

About the MCP server

FAQ

Frequently asked questions

Year, make, model, trim/submodel, the OEM tire size and any alternate sizes.

Call /tires/v1/by-vehicle?make=acura&model=nsx (year optional). It returns the OEM size plus alternates, ordered by year.

Yes. /tires/v1/search?size=215/45R16 matches against both OEM and alternate sizes to find vehicles that take that size.

A curated sample of about 580 fitments across 36 makes, model years 1989-2025. List endpoints return up to 25 rows per call.

Keep building

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