225/70R15 tires have a diameter of 27.4", a section width of 8.86", and a wheel diameter of 15". The circumference is 86.0 inches and the revolutions per mile are 737. Specs vary by manufacturer.
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Diameter : 27.4"
Width : 8.86"
Wheel : 15"
Circumference : 86.0"
Revs/Mile : 737
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