Rotor Size Calculator

Calculate brake rotor thermal capacity, sizing requirements, and upgrade potential.

Rotor Specifications

Rotor Diameter (in)

Rotor Thickness (in)

Minimum Thickness (in)

Wheel Size (in)

Construction

Vane Count

Vehicle Weight (lbs)

Max Speed (mph)

Target Decel (g)

Ambient Temp (F)

486°F

Within safe operating range

Surface Area232.9 in²

Effective Radius5.52"

Swept Area12.9 in²

Rotor Mass22.7 lbs

Kinetic Energy (full stop)3382 BTU

Energy per Front Rotor1015 BTU

Thermal Mass2.50 BTU/°F

Temperature Rise+406°F

Minimum Wheel Size15"

Max Rotor for 18" Wheel16"

Upgrade Margin+3.0"

Compatible with current wheel

Wear Margin0.150" (12%)

ConditionGood