Free Plus-Sizing Tools/Fitment Data

Why SizeItUp?

In today’s world, customers move fast and make quick decisions. Having the right wheel and tire fitment data powering your website is a must. Sizeitup offers a variety of products and services that allow your customers to correctly select the wheels and tires that is best suited for their vehicle.


Vehicle Date Range: 1950’s – Current

O.E. Tire Sizes and Optional O.E. Tire Sizes

O.E. Staggered Tire Sizes

Vehicle Bolt Pattern, Lug Nut Thread, Hub Center Bore, Front and Rear Offset Ranges

Plus Tire Size Range: 15” – 30”

Staggered Plus Size Fitments

Vehicle Warning Notes

Big Brake Calculations

Lifted Truck Applications

Advanced Fitment Algorithm

Product Brand Cataloging

How Can We Help?

By implementing one or more of the Sizeitup products into your website and / or a retail or wholesale operation, will give your company the edge over the competition with the ability to verify vehicle fitment data and allow your customers to select the correct wheel and tire products every time.


Gain the most knowledgeable virtual salesperson by selecting any one of our products for your website, or use our application guide and fitment tools to give your already skilled staff the extra edge for those not so common fitments.

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Wheel & Tire Application Guide/Plus-Sizing Tools.


Using this service will offer the most complete online reference guide for vehicle fitment data along with free plus-sizing tools to gather all the necessary specifications. Our reference guide includes: Bolt Pattern, Offsets, Hub Bore, Lug Nut Thread, O.E. and Optional Tire Sizes, and Plus Tire Sizes  for every Year, Make, Model.


No More Second Guessing…. Start Using Sizeitup TODAY for Guaranteed Fitment Information.

eCommerce Wheel & Tire Websites

Wheel & API/Data Feeds

Wheel & Tire Fitment Plug-In

Wheel Data Exchange

SizeItUp Fitment Tools/Application Data

Ecommerce web solutions designed for small to large businesses. Services b2c as well as b2b clients.

Custom data feeds delivering accurate fitment data by year, make, model.

Simplest solution to add a wheel and tire fitment guide to any website.

Collectively mapping manufacturer wheel and tire data into a standardized format for export.

Collection of tools designed to view vehicle wheel & tire fitment specs, plus-sizing, reverse wheel search and more....

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