Tire Size API & Vehicle Fitment Data for Developers

REST API by Virtual Dimension — Search by Vehicle or Tire Size

Tire Data API Overview — Specs, Fitment & Compatibility

The Tire Size API provides accurate tire specifications, vehicle fitment data, and wheel compatibility details through a simple REST interface. Query by year, make, model, and trim — or by VIN, or by tire size — to retrieve OE tire sizes and their dimensions for any vehicle. Designed for automotive e-commerce platforms, tire store websites, fleet management systems, and mobile apps, this API delivers real-time JSON responses with comprehensive tire and wheel fitment information. Start with our free plan — no credit card required — and scale as your platform grows.

Get Started with the Tire Size API in Minutes

Create Account

Choose Your Plan

Get Your API Key

Build Your App

Flexible Plans for Tire Stores, Developers & Automotive Platforms

Tire Size API Pricing — Free Plan to Business

All prices are listed in Canadian dollars.

Free

$ 0 / month

Test the tire size API with 250 tire lookups a month, plus 250 bonus lookups to start. Ideal for prototyping and development.

250 tire lookups / month

+250 bonus to start

Vehicle browsing free

Community support

FREE TRIAL

No credit card required

Starter

$ 40/ month

For tire stores and apps moving to production. 5,000 daily requests with email support included.

All of Free, uncapped

5,000 req / day

Email support

Factory OEM specs

GET STARTED

Business

$ 150/ month

For high-traffic tire e-commerce platforms. 80,000 daily requests, tire search analytics, and dedicated support.

All included in Pro

80,000 req / day

Tire search analytics

Full tire-size catalog

Dedicated support

GET STARTED

Pro

$ 70/ month

For growing automotive platforms and fleet systems. 50,000 daily requests with priority support.

All included in Starter

50,000 req / day

Priority support

Custom integrations

GET STARTED

Starter

$ 420/ year

Scale your tire fitment integration with higher request limits and email support.

All of Free, uncapped

5,000 req / day

Email support

Factory OEM specs

GET STARTED

Business

$ 1500/ year

Scale your tire fitment integration with higher request limits and dedicated support.

All included in Pro

80,000 req / day

Tire search analytics

Full tire-size catalog

Dedicated support

GET STARTED

Pro

$ 700/ year

Scale your tire data integration with enterprise-level request limits and priority support.

All included in Starter

50,000 req / day

Priority support

Custom integrations

GET STARTED

Why Choose Our Tire Size & Wheel Fitment API?

Fast & Scalable Tire Data: Built for high-volume production environments, our API delivers sub-second JSON responses so your tire store or automotive app stays responsive under heavy traffic.
Complete Vehicle Fitment Coverage: Access OE tire sizes for thousands of makes, models, years, and trims — the full size string plus its width, aspect ratio, and rim diameter.
Easy REST API Integration: A developer-friendly REST interface with clear JSON responses, API key authentication, and interactive documentation to get your first query running in minutes.
Search by Vehicle or Tire Size: Query by year/make/model/trim or by tire width, aspect ratio, and diameter — flexible endpoints for any use case.
VIN Lookup: Decode a 17-character VIN to instantly retrieve the vehicle's factory tire sizes — every plan includes a monthly VIN lookup quota.
Real-Time, Up-to-Date Data: Our tire fitment database is continuously updated to include the latest vehicle models and tire specifications.

Tire Size API Endpoints — Vehicle Lookup, Size Search & Specs

Our REST API provides multiple endpoints for querying tire data, vehicle fitment, and tire specifications by vehicle or tire dimensions.

Search by Tire Size: Provide the width, aspect ratio, and diameter to retrieve detailed tire specifications and compatible vehicle models.
Search by Vehicle Model: Input a vehicle’s make, model, and year to find the recommended tire sizes and specs.
Search by VIN: Decode a vehicle identification number and get the vehicle’s factory tire sizes in a single request.
Reverse Lookup: Start from a tire size and get back every year, make, model, and trim that uses it.
Full Size Catalog: Business plans can pull every distinct tire size in the database in a single cached call to seed their own size picker.
Tire Specification Details: Get the exact dimensions behind any fitment — width, aspect ratio, rim diameter, and the combined size string.

Full API Documentation →

FOR DEVS TEAMS

Find tire sizes and fitment specs for any vehicle by year, make, model, and trim.

Vehicle Fitment Lookup Endpoints

Year

/api/v1/by_vehicle/search_year

Make

/api/v1/by_vehicle/make/?year=2024

Model

/api/v1/by_vehicle/model/?year=2024&make=honda

Trim

/api/v1/by_vehicle/trim/?year=2024&make=honda&model=civic

Tire Size

/api/v1/by_vehicle/tiresize/?year=2024&make=honda&model=civic&trim=ex sedan

$ curl -X 'GET' \ 'https://tire.vdim.app/api/v1/by_vehicle/tiresize/?year=2024 
& make=honda & model=civic & trim=ex sedan'
\ -H 'accept: application/json' \
  -H 'x-api-key: your_generated_api_key'

{
  "data": [
     {
        "model": "Accord"
    },
    {
        "model": "CR-V"
    },
    {
        "model": "Civic"
    },
    {
        "model": "HR-V"
    },
    {
        "model": "Odyssey"
    },
	.
    	.
    	.
    ]
   }

ULTRA-FAST RESPONSE

Query tire fitment data by width, aspect ratio, and rim diameter for an exact size match.

Tire Size Search Endpoints

Width

/api/v1/by_size/search_allwidth

Aspect Ratio

/api/v1/by_size/aspectratio/?width=225

Diameter

/api/v1/by_size/diameter/?width=225&aspectratio=45

{
  "data": [
{
        "aspectratio": "35"
    },
    {
        "aspectratio": "40"
    },
    {
        "aspectratio": "45"
    },
    {
        "aspectratio": "50"
    },
    {
        "aspectratio": "55"
    },
    {
        "aspectratio": "60"
    },
	.
    	.
        .
    ]
   }

$ curl -X 'GET' \ 'https://tire.vdim.app/api/v1/by_size
/aspectratio/?width=225
\ -H 'accept: application/json' \
  -H 'x-api-key: your_generated_api_key'

ONE CALL, FULL FITMENT

Decode a VIN straight to its factory tire sizes, or start from a tire size and find every vehicle that uses it.

VIN

/api/v1/by_vin/1HGCM82633A004352

Reverse Lookup

/api/v1/reverse_lookup/?tiresize=225/60R16

Size Catalog (Business)

/api/v1/search_allsizes

OEM Specs (paid plans)

/api/v1/oem_specs/?year=2021&make=Ford&model=F-150

{
  "success": true,
  "vehicles": [
    {
        "year": "2016",
        "make": "Honda",
        "model": "CR-V",
        "trim": "EX"
    },
	.
    	.
    ],
  "count": 148
   }

$ curl -X 'GET' \ 'https://tire.vdim.app/api/v1
/reverse_lookup/?tiresize=225/60R16'
\ -H 'accept: application/json' \
  -H 'x-api-key: your_generated_api_key'

Tire Size API & Vehicle Fitment Data for Developers

Tire Data API Overview — Specs, Fitment & Compatibility

Get Started with the Tire Size API in Minutes

Flexible Plans for Tire Stores, Developers & Automotive Platforms

Tire Size API Pricing — Free Plan to Business

Free

$ 0 / month

Starter

$ 40/ month

Business

$ 150/ month

Pro

$ 70/ month

Starter

$ 420/ year

Business

$ 1500/ year

Pro

$ 700/ year

Why Choose Our Tire Size & Wheel Fitment API?

Tire Size API Endpoints — Vehicle Lookup, Size Search & Specs

Find tire sizes and fitment specs for any vehicle by year, make, model, and trim.

Query tire fitment data by width, aspect ratio, and rim diameter for an exact size match.

Decode a VIN straight to its factory tire sizes, or start from a tire size and find every vehicle that uses it.

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