The Short Version
The claim is largely accurate. Multiple credible sources—including Cycle World, Bennetts Insurance, and motorcycle coaching experts—confirm that braking and acceleration generate significantly more tire heat than weaving, because longitudinal forces cause greater carcass flex. Even sources skeptical of the claim concede braking is superior. However, the claim oversimplifies: effective street warm-up requires *progressive* braking (not hard stops on cold tires), weaving does produce some heat, and aggressive inputs on cold tires can actually reduce grip.