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305/40R18 Tires

305/40R18 tires have a diameter of 27.6", a section width of 12.0", and a wheel diameter of 18". The circumference is 86.7" and they have 731 revolutions per mile.
Generally they are approved to be mounted on 10-12" wide wheels.
Specs may vary by manufacturer. learn more
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305/40R18 Tire Front
12.0"
27.6"
305/40R18 Tire Side
18 Inch Wheel
Circumference
86.7"
18"
4.8"
731 Revs/Mile
305/40R18
Diameter : 27.6"
Width : 12.0"
Wheel : 18" x 10-12"
Sidewall : 4.8"
Circum. : 86.7"
Revs/Mile : 731

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

Nitto Tires
Nitto NT555RII 305/40R18
NT555RII
Street/Racetrack | (P)106W SL
Avg. $419.00
Mickey Thompson Tires
Mickey Thompson ET Street S/S 305/40R18
ET Street S/S
Street/Racetrack | (P)NA SL
Avg. $473.99