6 calculators in this category
- Coil Spring Rate CalculatorHelical compression spring rate (Shigley / SAE HS-795)Spring rate is fixed by four things — wire diameter, mean coil diameter, the number of active coils and the material's shear…
- Wheel Rate & Motion Ratio CalculatorMotion ratio defined as spring travel ÷ wheel travelA spring rate printed on a coil tells you nothing until you know where the spring sits. Suspension leverage divides both the…
- Weight Transfer CalculatorSAE J670 vehicle dynamics terminology; NHTSA static stability factorWeight transfer is what a vehicle's centre of gravity does to its tire loads the moment it accelerates in any direction, and it…
- Wheel Offset & Backspacing CalculatorISO 3911 wheel and rim terminologyOffset and backspacing describe the same thing two different ways, which is why comparing an ET35 wheel with a…
- Towing Capacity & Payload CalculatorSAE J2807 tow-vehicle rating practiceThe number in the brochure is not your towing capacity. Your real limit is whichever of four separate ceilings you hit first…
- Trailer Tongue Weight CalculatorSAE J684 hitch classes; 10–15% conventional / 15–25% fifth-wheel practiceTongue weight is the downward force the trailer coupler puts on the hitch ball, and it is set almost entirely by where the…
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