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315/40R21 Tires

315/40R21 tires have a diameter of 30.9", a section width of 12.4", and a wheel diameter of 21". The circumference is 97.1" and they have 653 revolutions per mile.
Generally they are approved to be mounted on 10.5-12.5" wide wheels.
Specs may vary by manufacturer. learn more
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315/40R21 Tire Front
12.4"
30.9"
315/40R21 Tire Side
21 Inch Wheel
Circumference
97.1"
21"
5.0"
653 Revs/Mile
315/40R21
Diameter : 30.9"
Width : 12.4"
Wheel : 21" x 10.5-12.5"
Sidewall : 5.0"
Circum. : 97.1"
Revs/Mile : 653

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Toyo Tires
Toyo Proxes Sport 315/40R21
Proxes Sport
Summer | 111Y SL
Avg. $328.00
 Supreme Performance  
25K Miles
Continental Tires
Continental CrossContact LX Sport 315/40R21
CrossContact LX Sport
Truck/SUV All Season | 111H SL
Avg. $338.20
 Touring  
Michelin Tires
Michelin Primacy Tour A/S 315/40R21
Primacy Tour A/S
All Season | 111H SL
Avg. $371.00
 Grand Touring  
55K Miles
Continental Tires
Continental CrossContact LX Sport 315/40R21
CrossContact LX Sport
Truck/SUV All Season | 115V XL
Avg. $390.00
 Touring  
Continental Tires
Continental SportContact 6 315/40R21
SportContact 6
Summer | 111Y SL
Avg. $401.50
 Supreme Performance  
Yokohama Tires
Yokohama Geolandar X-CV 315/40R21
Geolandar X-CV
Truck/SUV All Season | 115W XL
Avg. $402.00
 Sport  
50K Miles
Pirelli Tires
Pirelli Scorpion Zero All Season 315/40R21
Scorpion Zero All Season
Truck/SUV All Season | 111H SL
Avg. $438.00
 Sport  
Continental Tires
Continental SportContact 6 315/40R21
SportContact 6
Summer | 115Y XL
Avg. $447.00
 Supreme Performance  
Nexen Tires
Nexen N FERA Sport SUV 315/40R21
N FERA Sport SUV
Truck/SUV Summer | 113Y XL
Avg. $457.00
 Sport  
Michelin Tires
Michelin Latitude Sport 3 315/40R21
Latitude Sport 3
Truck/SUV Summer | 111Y SL
Avg. $460.50
 Sport  
20K Miles
Pirelli Tires
Pirelli Scorpion Zero All Season Plus 315/40R21
Scorpion Zero All Season Plus
Truck/SUV All Season | 111H SL
Avg. $461.00
 Sport  
50K Miles
Michelin Tires
Michelin Pilot Sport 4 SUV 315/40R21
Pilot Sport 4 SUV
Truck/SUV Summer | 115Y XL
Avg. $472.00
 Sport  
20K Miles
Bridgestone Tires
Bridgestone Alenza Sport A/S 315/40R21
Alenza Sport A/S
Truck/SUV All Season | 115V XL
Avg. $493.00
 Touring  
Michelin Tires
Michelin Pilot Sport 4 315/40R21
Pilot Sport 4
Summer | 115Y X
Avg. $507.00
 Supreme Performance  
20K Miles
Pirelli Tires
Pirelli P Zero PZ4 315/40R21
P Zero PZ4
Summer | 111Y SL
Avg. $509.38
 Supreme Performance  
Pirelli Tires
Pirelli Scorpion Winter 315/40R21
Scorpion Winter
Truck/SUV Winter | 115V XL
Avg. $572.00
 Performance  
Pirelli Tires
Pirelli Scorpion Winter 315/40R21
Scorpion Winter
Truck/SUV Winter | 111V SL
Avg. $572.50
 Performance  
Pirelli Tires
Pirelli Scorpion Zero All Season Plus 315/40R21
Scorpion Zero All Season Plus
Truck/SUV All Season | 115V XL
Avg. $683.00
 Sport  
50K Miles
Pirelli Tires
Pirelli P Zero PZ4 315/40R21
P Zero PZ4
Summer | 115Y XL
Avg. $713.00
 Supreme Performance  
Pirelli Tires
Pirelli Scorpion Zero All Season Plus 315/40R21
Scorpion Zero All Season Plus
Truck/SUV All Season | 115Y XL
Avg. $750.00
 Sport  
50K Miles
Pirelli Tires
Pirelli Scorpion Zero All Season 315/40R21
Scorpion Zero All Season
Truck/SUV All Season | 115Y XL
Avg. $814.00
 Sport