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315/30R18 Tires

315/30R18 tires have a diameter of 25.4", a section width of 12.4", and a wheel diameter of 18". The circumference is 79.9" and they have 793 revolutions per mile.
Generally they are approved to be mounted on 10.5-11.5" wide wheels.
Specs may vary by manufacturer. learn more
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315/30R18 Tire Front
12.4"
25.4"
315/30R18 Tire Side
18 Inch Wheel
Circumference
79.9"
18"
3.7"
793 Revs/Mile
315/30R18
Diameter : 25.4"
Width : 12.4"
Wheel : 18" x 10.5-11.5"
Sidewall : 3.7"
Circum. : 79.9"
Revs/Mile : 793

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Toyo Tires
Toyo Proxes R888R 315/30R18
Proxes R888R
Street/Racetrack | 98Y SL
Avg. $304.00
Pirelli Tires
Pirelli P Zero Rosso 315/30R18
P Zero Rosso
Summer | 98Y SL
Avg. $333.00
 Supreme Performance 
Nitto Tires
Nitto NT 01 315/30R18
NT 01
Street/Racetrack | 98W SL
Avg. $348.00
BFGoodrich Tires
BFGoodrich g-Force R1 S 315/30R18
g-Force R1 S
Street/Racetrack | 91W LL
Avg. $350.00
Falken Tires
Falken Azenis RT-615K 315/30R18
Azenis RT-615K
Summer | 98W SL
Avg. $400.00
 Ultimate Performance 
Hoosier Tires
Hoosier R7 315/30R18
R7
Street/Racetrack | (P)91W LL
Avg. $409.00
Hoosier Tires
Hoosier A7 315/30R18
A7
Street/Racetrack | (P)91W LL
Avg. $409.00
Michelin Tires
Michelin Pilot Sport PS2 315/30R18
Pilot Sport PS2
Summer | 98Y SL
Avg. $459.50
 Supreme Performance 
20K Miles