375/55R20 tires have a diameter of 36.2", a section width of 14.8", and a wheel diameter of 20". The circumference is 113.8" and they have 557 revolutions per mile.
Specs may vary by manufacturer. learn more
When searching for the perfect tire for your vehicle you need options. Click the "Alternate Sizes" button to see a list of similar tire sizes. You can then change the wheel size to see alternate sizes on a different diameter wheel.