Terms of Use & Highway Towing Safety Disclaimer

Mandatory Highway Towing Safety Obligations & Physical Vehicle Inspection

All interactive calculators, side-profile truck and trailer axle-vector SVG schematics, vehicle-by-trailer matchups, SAE J2807 equations, and hardware specifications published on PayloadScale.com are provided strictly as preliminary mathematical estimates for educational and planning purposes. Because every individual motor vehicle and trailer is subject to unique factory build sheets, dealer-installed accessories, aftermarket modifications, fluid levels, and cargo distribution, accessing this website does not replace physical inspection and commercial scale verification.

By using PayloadScale.com, you acknowledge and agree that the driver and operator of the tow vehicle bear 100% of the legal, mechanical, and operational responsibility for performing the following physical safety verifications prior to highway travel:

• Physical Inspection of Your VIN-Specific FMVSS No. 110 Door-Jamb Placard: Curb weights and payload capacities vary by hundreds of pounds between two seemingly identical trucks of the same year, make, model, and trim depending on optional equipment (panoramic sunroofs, 4x4 transfer cases, off-road skid plates, hybrid batteries, fifth-wheel prep packages, and deployable running boards). Always open your driver's door and inspect the yellow and white Tire and Loading Information placard (49 CFR 571.110) and federal B-pillar certification label affixed to your exact Vehicle Identification Number (VIN) to verify true legal payload, GVWR, Front GAWR, and Rear GAWR.
• Certified Commercial Scale (CAT Scale) Weighing: Brochure dry trailer weights (UVW) and planning coupling ratios are approximations. Before traveling on public highways, weigh your fully loaded tow vehicle and hitched trailer on a certified three-platform commercial weighbridge across Steer Axle, Drive Axle, and Trailer Axles, and verify that every axle and gross weight stays within manufacturer ratings.
• Proportional Trailer Brake Controller (ITBC) & Breakaway Switch Verification: Any trailer with a Gross Vehicle Weight Rating of 3,000 lbs or greater (or lower where mandated by state or provincial motor vehicle codes) requires working electric or electric-over-hydraulic trailer brakes controlled by a calibrated proportional brake controller along with a charged emergency breakaway battery and switch.
• Tire Load Index, Speed Rating & Cold Inflation Pressure Compliance: Never exceed the maximum load capacity or speed rating molded into the sidewalls of your tow vehicle's P-metric or LT-metric tires or your trailer's ST-metric tires. Inflate all tires to cold placard PSI before towing.

No Warranty & Limitation of Liability

PayloadScale.com and its interactive payload, tongue weight, fifth-wheel pin weight, and CAT Scale calculators are provided on an "AS IS" and "AS AVAILABLE" basis without warranties of any kind, whether express or implied. While vehicle reference figures are cross-checked against OEM towing guides and SAE J2807 mathematical standards, automobile and RV manufacturers reserve the right to change GVWR, GCWR, axle ratios, and curb weights mid-model-year without notice.

Under no circumstances shall Ulysan or PayloadScale.com be held liable for any direct, indirect, incidental, consequential, or punitive damages (including rear axle overload, transmission overheating, brake fade, tire failure, trailer sway, property damage, personal injury, traffic citations, DOT fines, or voided vehicle warranties) arising out of or connected with the use of information or calculators on this website.

Intellectual Property Rights & Acceptable Use

The custom source code, dynamic side-profile rig axle-vector SVG schematics, calculation engine, and original prose on PayloadScale.com are protected by copyright and applicable intellectual property laws. You may freely use our calculators for personal or fleet planning and cite individual payload audits with an attribution link to PayloadScale.com. Automated bulk mirroring or redistribution of the site without written authorization from Ulysan is prohibited.

Governing Law & Jurisdiction

These Terms of Use and any dispute arising from the use of PayloadScale.com are governed by the laws of France, without prejudice to mandatory consumer protection rules applicable in your country of residence. Any legal claim not resolved amicably through legal@payloadscale.com shall be submitted to the competent courts of Strasbourg, France. See our Legal Notice for complete statutory publisher identification.