Reliable Tire & Wheel Fitment Data for High-Volume Operations
Access tire size, bolt pattern, center bore, torque specs, and chassis measurements instantly. The Tire & Wheel Specifications API accepts VIN or YMM and returns structured data built for retailers, dealerships, fleets, and platforms.
Why Choose Our Tire & Wheel Specifications API
Built for high-volume automotive operations, this API delivers precise tire and wheel data that powers e-commerce platforms, dealership systems, and fleet workflows.
Fast & Reliable
<1 sec JSON responses with 99.99% uptime.
VIN or YMM Input
Decode by 17-digit VIN or simple Year/Make/Model.
North America Coverage
US & Canada vehicles from 1981 to present.
Complete Fitment Data
Tire size, bolt pattern, center bore, torque specs, and chassis measurements.
Developer-Friendly
REST API with clear documentation and easy integration.
Production Ready
Designed for e-commerce, parts catalogs, claims systems, and internal tools.
Automated Tire & Wheel Matching by VIN or YMM
The Tire & Wheel Specifications API is a REST-based service that retrieves structured tire and wheel fitment data using either a 17-digit VIN or Year/Make/Model input.
Instead of relying on static charts, manual wheel fitment guides, or searching online for where to find the tire size on the car, this API pulls the correct specifications instantly.
Each request returns:
Tire size and mounting hardware details
Center bore
Front and rear track width
Bolt pattern
Thread size and wheel tightening torque
Wheelbase measurements
The data comes back in a clean JSON format that is easy to plug into product pages, checkout validation, internal tools, or marketplace filters.
How the Tire Size API Works
The workflow is simple and built for automation. Here’s how it works:
Step 1: Submit Input
Choose one of the following:
- VIN (recommended for exact OEM configuration)
- Year / Make / Model
Step 2: Receive Structured JSON Response
The API returns:
- Tire size data
- Wheel fitment specifications
- Track width measurements
- Wheelbase data
For businesses that rely on a tire size API, this replaces spreadsheet cross-checks with predictable data output.
For businesses that rely on a tire size API, this replaces spreadsheet cross-checks with predictable data output.
Coverage & Compatibility
Below is a quick overview of regional coverage and technical compatibility:
Coverage
This API supports North American vehicles:
- United States and Canada
- Model years 1981 to present
- Passenger cars, SUVs, trucks, and light-duty vehicles
Support
Input formats are standardized for integration:
- All valid 17-digit VINs
- Year/Make/Model input supported
- Structured JSON response format
Check out the Tire & Wheel Specifications API in Action!
You can test the API directly on this page. Enter a VIN or YMM and retrieve real tire and wheel data instantly.
Review bolt patterns.
Confirm torque specs. Validate wheelbase and track width. The output you see here is the same format used in production integrations.
What the Tire & Wheel Fitment API Delivers
When you send a VIN or YMM, the API returns detailed tire and wheel specifications for that vehicle in a consistent format that is easy to integrate into checkout flows, catalogs, or internal tools.
Everything You Receive in a Single API Call
Below are the primary data elements returned by the API.
Vehicle Identification
Each response includes:
- Year
- Make
- Model
This ensures fitment data aligns precisely with the vehicle configuration.
Wheel Fitment Details
Fitment data supports accurate compatibility checks for aftermarket wheels and factory replacements.
This replaces reliance on static charts and improves ordering accuracy.
Tire Size & Hardware Specifications
The API returns wheel and tire mounting details, including:
- Center bore
- Bolt pattern (e.g., 5x114.3)
- Wheel fasteners
- Thread size
- Wheel tightening torque
These fields are essential for proper wheel installation and safety compliance.
Track and Wheelbase Measurements
Chassis measurements are included for validation and engineering use cases:
- Front track width (inches)
- Rear track width (inches)
- Wheelbase (inches)
This supports platforms that require dimensional verification beyond basic tire sizing.
Sample Wheel and Tire Fitment API Response
{
"status": "success",
"data": {
"year": "2018",
"make": "Chevrolet",
"model": "Express 2500",
"data": [
{
"all_trims": {
"track_width_front_in": "67.75, 67.71",
"track_width_rear_in": "67.13, 67.44",
"wheelbase_in": "155, 135"
}
}
]
}
}
Why Businesses Choose Our Tire & Wheel Specifications API Over Free Fitment Tools
Many businesses rely on static wheel fitment guide charts or free online tools. While those can work for occasional lookups, they are not built for automation, scale, or integration.
See why users choose us over free websites:
| Feature | Our Tire & Wheel Specifications API | Free Fitment Tools |
|---|---|---|
| 17-Digit VIN Support | ✓ | × |
| Year/Make/Model Support | ✓ | ✓ |
| Trim-Level Precision | ✓ | × |
| Structured JSON Output | ✓ | × |
| Automation-Ready for Checkout & Filtering | ✓ | × |
| Bolt Pattern & Hardware Specs | ✓ | ✓ |
| Center Bore & Torque Specs | ✓ | ⚠ |
| Track and wheelbase Data | ✓ | × |
| US & Canada Coverage (1981–Present) | ✓ | ⚠ |
| Commercial Integration License | ✓ | × |
| Production Infrastructure & Uptime | ✓ | × |
| Ongoing Dataset Maintenance | ✓ | × |
Common Fitment Problems This API Eliminates
When a tire or wheel doesn’t fit, the cost spreads across shipping, labor, support time, refunds, and brand trust. It adds up quickly. Let’s break down the most common issues:
Incorrect bolt pattern or tire size shipments
$80 to $150 per return when factoring in freight, restocking labor, payment processing fees, and support time.
1% error rate on 10,000 monthly orders
100 returns × $100 average cost = $10,000 per month
That’s $120,000 per year in preventable losses.
Manual wheel fitment guide lookups
3 extra minutes per vehicle × 40 vehicles per day = 2 hours of lost technician time daily.
At $100 per labor hour, that’s roughly $60,000 per year in lost productivity.
Marketplace compatibility errors
Even a 0.5% misfit rate at high volume can translate into tens of thousands annually in refunds, disputes, and reputational damage.
A structured Tire & Wheel Specifications API reduces preventable returns, eliminates manual cross-checking, and protects margins with VIN or YMM-based validation.
Built for High-Volume Tire & Wheel Operations
Fitment accuracy directly affects sales, returns, and customer trust. Businesses that sell, install, or validate tires and wheels rely on precise specifications to avoid costly mistakes.
Here’s who gains the most value from automated tire and wheel fitment data.
Online Tire Retailers
Online tire sellers operate at scale, where small sizing mistakes quickly turn into expensive returns.
How do online tire retailers benefit?
- Reduce fitment-related returns
- Validate compatibility before checkout
- Increase buyer confidence
- Lower sizing support requests
- Improve conversion rates
Aftermarket Wheel Sellers
Wheel sellers face higher risk because misfit shipments are expensive to fix.
How do aftermarket wheel sellers benefit?
- Confirm bolt pattern instantly
- Validate center bore and thread size
- Prevent costly misfit orders
- Reduce freight and restocking losses
- Protect profit margins
Automotive Marketplaces
Marketplaces must manage thousands of Stock keeping units across multiple vehicle types.
How do automotive marketplaces benefit?
- Automate compatibility filtering
- Show only verified-fit products
- Reduce buyer-seller disputes
- Scale without manual fitment charts
- Strengthen platform trust
Dealership Parts Departments
Dealerships need factory-accurate specifications during service and replacement.
How do dealership parts departments benefit?
- Confirm OEM specifications quickly
- Reduce ordering errors
- Support accurate installations
- Minimize service delays
- Improve workflow speed
National Tire Chains & Franchise Shops
Busy service centers depend on fast intake and accurate validation.
How do tire chains and service centers benefit?
- Validate tire size instantly
- Remove manual chart lookups
- Standardize fitment checks
- Reduce installation mistakes
- Improve service turnaround
Fleet & Commercial Vehicle Operators
Fleet managers need consistent specifications across diverse vehicle groups.
How do fleet and commercial operators benefit?
- Standardize purchasing decisions
- Reduce downtime from misfit orders
- Simplify procurement
- Improve maintenance planning
- Control operational costs
Improve Your Business Efficiency and Operations with Additional APIs
Combine tire and fitment data with other services for deeper vehicle intelligence. Some options include:
Decode VINs to confirm full vehicle specifications before validating fitment.
Access accident, theft records, damages, title data, and more to support inspections and resale decisions.
Extract VINs or license plates from images to automate vehicle identification.
Convert plates to vehicle records when VIN is unavailable.
Retrieve valuation data for pricing and insurance workflows.
Access past auction, images, and sales data for deeper vehicle context.
If you need integration support, higher rate limits, custom endpoints, or an entirely new API customized to your workflow, our team is ready to help. Reach out to discuss your requirements, and we’ll guide you through the next steps.
What Automotive Professionals Are Saying
Automotive retailers, dealerships, fleet operators, and software platforms rely on Vehicle Databases APIs every day to power accurate, production-ready workflows.
Here’s what they say about our API:
Get Started with the Tire & Wheel Specifications API
Test the API with free trial credits and retrieve accurate fitment data instantly. Need bulk datasets for internal systems or offline integration? Explore our downloadable vehicle databases for enterprise workflows and large-scale deployment.
FAQ About Tire & Wheel Specifications API
Does this API provide OEM factory tire sizes?
Yes, this API provides OEM factory tire sizes tied to the VIN or selected year/make/model. When a VIN is used, the response reflects the vehicle’s original factory configuration where available, helping businesses validate against correct OEM specifications.
What is the difference between VIN lookup and YMM lookup?
The difference between VIN lookup and YMM lookup is precision. VIN lookup validates trim-level and configuration-specific details, while Year/Make/Model lookup returns standard fitment data for that model. For exact factory-installed setups, VIN is recommended.
Does the API include bolt pattern and lug nut information?
Yes, the API includes bolt pattern and lug nut information, along with center bore, thread size, and wheel tightening torque where available. These fields are critical for safe installation and accurate wheel compatibility validation.
Does the API provide track and wheelbase measurements?
Yes, the API provides track and wheelbase measurements, including front and rear track width and wheelbase dimensions. This supports platforms that require chassis-level validation beyond basic tire sizing.
How often is the tire and wheel fitment data updated?
The tire and wheel fitment data is regularly updated to reflect newly released models and dataset corrections. Ongoing maintenance ensures continued coverage for US and Canada vehicles from 1981 to present.
Is this API suitable for commercial and high-volume use?
Yes, this API is designed for commercial and high-volume use. It supports automation, structured JSON responses, and production-level reliability for retailers, marketplaces, fleet platforms, and SaaS integrations.
Can this API replace a wheel fitment guide?
Yes, this API can replace a traditional wheel fitment guide. Instead of relying on static charts, it delivers structured, automated fitment data that can be integrated directly into systems and workflows.
Does the API include aftermarket fitment recommendations?
No, the API focuses on factory-based fitment specifications and hardware details. It provides the foundational data needed to validate compatibility but does not recommend specific aftermarket products.
What happens if a VIN is invalid or unsupported?
If a VIN is invalid or unsupported, the API returns a structured error response. This allows platforms to handle validation cleanly without breaking workflow or checkout logic.