# Flat Spot > Flat Spot — motorsport glossary term on TRAACKS. ## Definition A worn patch on a tire caused by a lock-up during braking. The flat area creates vibrations that can be felt through the steering wheel and chassis, reducing performance and comfort. Severe flat spots may require an unplanned pit stop for new tires. - **Category**: Technical - **TRAACKS page**: [https://traacks.club/glossary/flat-spot](https://traacks.club/glossary/flat-spot) ## Related Terms - [Lock-Up](https://traacks.club/glossary/lock-up) - [Tire Degradation](https://traacks.club/glossary/tire-degradation) - [Braking Zone](https://traacks.club/glossary/braking-zone) ## Links - [Full glossary](https://traacks.club/glossary) - [TRAACKS llms.txt](https://traacks.club/llms.txt)