315/40R25 In Inches

What size tire is 315/40R25 in Inches?

The 315/40R25 equivalent to 34.9x12.4R25 in inches, as follow:

  • 34.9 inches (887mm) stand for the tire diameter, also referred to as the tire height
  • 12.4 inches (315mm) is the tire width, this may also know as the section width
  • 25 inches (635mm) represent the rim diameter or called the wheel diameter that can be mounted on.
InchesMetric
Tire Diameter34.9"887 mm
Tread Width12.4"315 mm
Rim Diameter25"635 mm
Sidewall Height5"126 mm
Circumference109.6"2784 mm
Revolutions578 revs/mile359 revs/km
tire diameter
12.4"
34.9"
Tire Side
Tire Circumference
109.6"
25"
5"
578 Revs/Mile

What is 315/40R25 tire diameter?

The 315/40R25 has an overall diameter of 34.9 inches or 887 mm tall (Measurement of a tire’s outside diameter through its exact center when inflated with no load.)

How wide is a 315/40R25 tire’s width?

The 315/40R25 has a width of 12.4 inches or 315 mm wide. This is the measurement of the tire at its thickest point, the distance between the outer sidewall’s widest point and the inner sidewall’s widest point. This physical width of the tire can change if the tire is mounted on a wheel slightly wider or narrower than the size indicated by the rim width.

What is a 315/40R25 tire sidewall height?

The 315/40R25 has a sidewall height of 5 inches or 126 mm tall. It’s measured from the wheel rim to the top of the tread, expressed as a percentage of tire width.

What size rim do you need for 315/40R25?

The 315/40R25 tire has a size rim of 25 inches or 635 mm. This number represents the distance between the two bead seat areas where the tire is sealed onto the wheel.

How many revolutions for 315/40R25 per mile or kilometer?

The 315/40R25 performs 578 revolutions per mile or 359 revolutions per kilometer. Revolutions per mile indicate the number of times a tire revolves while it covers the distance of one mile/kilometer

How about 315/40R25 tire circumference?

The circumference of 315/40R25 is 109.6 inches or 2784 mm.

What’s wider or narrow than 315/40R25 is acceptable?

You can replace the 315/40R25 tires that are within ±3% of the overall tire diameter. In this case, it’s between 33.9 and 35.9 inches (860mm to 914 mm). Check our tire size chart here or the tire size calculator tool here to find your size.


Tire Size Chart for 25" Wheels:

34″ Tire Diameter

*Disclaimer: The information provided on the tire size is for general informational purposes only. We recommend that you consult a certified tire specialist or National Highway Traffic Safety Administration (NHTSA) sets specific guidelines for tires used on vehicles.


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Jamie Hicks

Sullivan Kane

Tire Technician at TireSizesCalculator

Sullivan is a Tire Technician specializing in tire repair at TireSizesCalculator. With over 6 years of experience in the industry, Sullivan has become an expert in tire repair, maintenance & installation.


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