Three-Weigh Analysis
Enter truck-only, hitched without weight distribution, and hitched with weight distribution scale readings. Rigmargin calculates trailer weight, tongue weight, axle margins, payload margin, and steer-axle restoration.
iPhone and iPad App · Version 1.0
Rigmargin
Turn real scale tickets into an explainable RV towing margin plan.
Trip Planning
- Vehicle, axle, tire, trailer, and hitch ratings
- Cargo scenario lab with before-and-after margins
- Departure checklist and local PDF report
- Offline field-reference guide
Private by Design
No account, ads, tracking, analytics, or subscription. Your ratings, weights, scenarios, and notes remain on your device unless you deliberately share a report.
Important Boundary
Rigmargin provides planning estimates from values you enter. Verify every rating and measurement against the vehicle, trailer, tire, hitch, scale ticket, manufacturer guidance, and applicable law before towing.