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305/30R21 Tires

305/30R21 tires have a diameter of 28.2", a section width of 12.0", and a wheel diameter of 21". The circumference is 88.6" and the revolutions per mile are 737.
Specs may vary by manufacturer. learn more
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305/30R21 Tire Front
12.0"
28.2"
305/30R21 Tire Side
21 Inch Wheel
Circumference
88.6"
21"
3.6"
737 Revs/Mile
305/30R21
Diameter : 28.2"
Width : 12.0"
Wheel : 21"
Sidewall : 3.6"
Circum. : 88.6"
Revs/Mile : 737

Upsizing Wheels or Tires?

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.
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Select a Size to Compare Prices on Available Tires

Pirelli Tires
Pirelli P Zero Nero GT 305/30R21
P Zero Nero GT
Summer | 104Y XL
Avg. $431.16
 Supreme Performance 
Pirelli Tires
Pirelli P Zero Nero 305/30R21
P Zero Nero
Summer | 104Y XL
Avg. $458.00
 Supreme Performance