Modified Tire Groovers

Learn some helpful tips for using your tire groover as well as what direction to cut your grooves and sipes for maximum side bite and forward bite on your dirt circle track race car.

Need better tire traction on the track? Read our guide on increasing traction with grooving, siping, and needling to ensure your racing tires have great grip.

A complete redesign for Hoosier's rear dirt sprint car tires has come after nearly 25 years. Learn about the changes and how they affect your sprint car setup.

Learn how to lower a hot rod by modifying the axles and some history behind early hop ups. This project features a Ford axle with wishbones for a Model A.

Grooving tires increases traction or grip. Find out more about the do's and don'ts when it comes to grooving.

In order to be competitive and win, it's important to find the right set up that works for you and your car. Here's some general reminders to remember during set up!

Learn a few tips on how to properly mount Modified bodies and some products that will help get your race car body fabrication job done!

This article demonstrates how to install a complete Winters quick change kit with additional parts including birdcages, brackets, and calipers for a modified race car.

Devyn Peterson is an Auto Tech in the Speedway Motors Customer Experience center. He's also a racer, starting out in karts when he was just 5 years old. He moved up to a Modified when he was 13 and hasn't looked back!

Discover what siping is and how it can be used to your advantage.