Published dimensions + body-specific positions
SCCA Road Racing / Majors / Runoffs
Number & placement guide
The September GCR requires 8-inch numbers with 1.5-inch strokes and 4-inch class marks with 0.5-inch strokes. Front and both-side numbers are required.
SCCA Road Racing / Majors / Runoffs
at a glance.
Dimensions below refer to the actual character, not the outside panel. Consult the linked official text for the complete provisions.
| Detail | What to plan for |
|---|---|
| Number format | One or two digits, or three digits beginning with 1. Number 1 has national-champion reservation rules. |
| Placement | Closed-wheel front numbers go on the hood; winged formula cars need rear-wing endplate numbers. Rear number/class is recommended. |
| Color and other marks | No reflective metallic characters or backgrounds. Check SCCA logos, minimum-weight/restrictor labels and supplements. |
Source: September 2026 GCR · §9.3.29. The full rule and your event supplements take precedence over this summary.
PLAN THE WHOLE CAR
Every position.
Accounted for.
Measure a clear area at each location before settling on a layout. A door handle, body crease, trim strip, or small front/rear area can change the available footprint.
Position reference: September 2026 GCR · §9.3.29. For magnetic placement limitations, read Magnum’s installation guidance.
8-inch number + 4-inch class
8-inch number + 4-inch class
8-inch number · Winged formula cars also need legible rear-wing endplate numbers.
Position list is a planning diagram, not an inspected installation or a scale drawing.
Your exact event belongs in the review.
Monthly GCR updates and event supplements matter. Your complete-car proof records body type, required official decals and class-specific weight or restrictor labels.
Before a production proof
- Check your registered number and any class or run-group identifier.
- Confirm current event requirements and required official decals.
- Measure clear width and height on the actual car.
- Record the finish and check the selected attachment material.
We check the actual characters, stroke widths, positions and supplied fit measurements on the production proof. The on-screen car illustration does not complete those checks.
Your registered class.
Use the code on your accepted entry. These links select artwork labels; they do not determine vehicle eligibility. Regional and supplemental classes can be entered manually.
A few useful answers.
Can I order if I do not have the complete rulebook?
Yes. Send the event registration link and what you know. We will research the identification requirements and keep the request open until the missing details are resolved. Printing starts only after the quote and production proof are approved. Official reference ↗
Can a magnetic kit work on every car?
No. It needs a suitable magnetic surface and full contact; aluminum, fiberglass, and carbon-fiber panels are not suitable magnetic substrates. Check the actual mounting area and finish. Magnum care and application guidance · Our material guide.
Does this include a guarantee of event compliance?
Our Race Ready service checks number-graphics requirements and provides a correction promise for our documented work. The organizer retains final approval; graphics do not certify vehicle classification, equipment or technical inspection. See our service terms.
Your number, with a plan.
Send your event, car and registered number for a complete graphics quote.