Instead of a “Protest”, Competitors or Event Officials with a question or concern about another competitor’s vehicle or behavior may file a “Compliance Query” to the Chief Steward, in writing, prior to the end of competition for an event. The Chief Steward or designated official or compliance committee will determine the answer to the question as soon as possible and before official results are posted. 

All involved must remain respectful throughout the whole process.

Details on the SCCA Rules Compliance Query Procedure can be found at: https://timetrials.scca.com/pages/protests-appeals-and-penalties

Note that in the case of vehicle compliance queries, the car speaks for itself.  Each competitor is ultimately responsible for ensuring that their vehicle is compliant with all safety and car preparation rules.