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275/40R21 Tires

275/40R21 tires have a diameter of 29.7", a section width of 10.8", and a wheel diameter of 21". The circumference is 93.1" and they have 680 revolutions per mile.
Generally they are approved to be mounted on 9-11" wide wheels.
Specs may vary by manufacturer. learn more
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275/40R21 Tire Front
10.8"
29.7"
275/40R21 Tire Side
21 Inch Wheel
Circumference
93.1"
21"
4.3"
680 Revs/Mile
275/40R21
Diameter : 29.7"
Width : 10.8"
Wheel : 21" x 9-11"
Sidewall : 4.3"
Circum. : 93.1"
Revs/Mile : 680

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Michelin Tires
Michelin Premier LTX 275/40R21
Premier LTX
Truck/SUV All Season | 107V XL
Avg. $253.00
 Touring 
60K Miles
$70 REBATE
Pirelli Tires
Pirelli Scorpion Winter 275/40R21
Scorpion Winter
Truck/SUV Winter | 107V XL
Avg. $283.00
 Performance 
Dunlop Tires
Dunlop SP Sport Maxx 275/40R21
SP Sport Maxx
Summer | 107Y XL
Avg. $295.00
 Supreme Performance 
Continental Tires
Continental CrossContact LX Sport 275/40R21
CrossContact LX Sport
Truck/SUV All Season | 107H XL
Avg. $325.00
 Touring 
$70 REBATE
Pirelli Tires
Pirelli Scorpion Verde 275/40R21
Scorpion Verde
Truck/SUV Summer | 107Y XL
Avg. $343.67
 Sport 
$70 REBATE
Pirelli Tires
Pirelli Scorpion Verde All Season 275/40R21
Scorpion Verde All Season
Truck/SUV All Season | 107V XL
Avg. $351.33
 Touring 
$70 REBATE
Pirelli Tires
Pirelli P Zero PZ4 Run Flat 275/40R21
P Zero PZ4 Run Flat
Summer | 107Y XL (RunFlat)
Avg. $431.00
 Supreme Performance