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Why 0.4 MPH Can Cost You a Lap: How NASCAR Actually Catches Pit Road Speeding

How NASCAR actually catches pit road speeding without a radar gun, the tolerance math behind it, and why 0.4 mph cost a driver a full lap in 2026.

Why 0.4 MPH Can Cost You a Lap: How NASCAR Actually Catches Pit Road Speeding
Jul 08, 2026 · 6 min read ·
Latest News
Why "Saving Your Tires" Can Win You the Race: NASCAR Tire Fall-Off ExplainedJul 01 · Why a Hand Out the Window Can Get Your Qualifying Lap Thrown Out: NASCAR's Ai...Jun 24 · Those Flaps on the Roof Are Not Decoration: How NASCAR Keeps Cars from Going ...Jun 19 · Why Your Favorite Track Races Different in 2026: The 750-Horsepower Change, E...Jun 17 ·
NASCAR See all
Why "Saving Your Tires" Can Win You the Race: NASCAR Tire Fall-Off Explained

Why "Saving Your Tires" Can Win You the Race: NASCAR Tire Fall-Off ...

Jul 01, 2026 · 5 min read ·
Why a Hand Out the Window Can Get Your Qualifying Lap Thrown Out: NASCAR's Airflow Rule, Explained

Why a Hand Out the Window Can Get Your Qualifying Lap Thrown Out: N...

Jun 24, 2026 · 6 min read ·
Those Flaps on the Roof Are Not Decoration: How NASCAR Keeps Cars from Going Airborne

Those Flaps on the Roof Are Not Decoration: How NASCAR Keeps Cars f...

Jun 19, 2026 · 7 min read ·