P315/30R18 in Inches

P315/30R18 tire size conversion to inches with detailed visualization of tire height, width, diameter, rim size and more.

What is P315/30R18 in inches?

When we convert P315/30R18 to inches, it is equivalent to 25.5x12.4R18. Let us break down the tire size dimensions for better understanding. 12.4 inches or 315 mm stand for section width, or width of the tire tread. 25.5 inches or 647 mm represent the overall diameter of the tire, or tire height. 18 inches is the rim diameter, or the diameter of the wheel the tire can be mounted on.

P315/30R18 Section Width
P315/30R18 Tire Side
Tire Circumference
791 Revs/Mile
Metric Inches
Overall Diameter 647 mm 25.5"
Tread Width 315 mm 12.4"
Rim Diameter 457 mm 18"
Sidewall Height 95 mm 3.7"
Circumference 2032 mm 80.1"
Revolutions 492 per km 791 per mile
Best Prices on P315/30R18 Tires
TireRack from $429.58

What is P315/30R18 tire width?

P315/30R18 tire has a width of 12.4 inches or 315 mm that reflects the measurement of tire's width from its inner sidewall to its outer sidewall at the widest point (excluding decorations, protective ribs or raised letters). Tire width is also called tread width, section width or cross section width. Tire width should be measured without any load placed upon the tire after it has been properly inflated and mounted on its industry assigned measuring rim.

What is P315/30R18 tire height?

P315/30R18 tire has an overall diameter of 25.5 inches or 647 mm that represents the outer diameter of the tire or tire height.

What is P315/30R18 tire sidewall height?

P315/30R18 tire has a sidewall height of 3.7 inches or 95 mm which is the measurement of tire sidewall from the wheel rim to the top of tire tread. Tire sidewall height or "profile" depends on aspect ratio - lower aspect ratio means lower tire profile.

What is P315/30R18 rim diameter?

Rim or wheel diameter is generally measured in inches, representing the size of the wheel the tire can be mounted on. P315/30R18 tire can be mounted on 18 inch wheels.

What is P315/30R18 tire circumference?

P315/30R18 tire has a circumference of 80.1 inches or 2032 mm that represents the outer perimeter of the tire.

How many revolutions P315/30R18 tire makes?

Tire revolutions indicate the number of times a tire revolves while it covers the distance of a mile or a kilometer. P315/30R18 tire completes 791 revolutions per mile or 492 revolutions per kilometer.

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