P205/70R13 Tire Size in Inches & Millimeters

Tire size “205/70R13” indicates your vehicle’s specifications based on tire width, aspect ratio, height, tire construction, diameter, radial and inches. These tire size numbers represent our tire sizes in both Metric (in millimeters) and Imperial (in inches) units of measurement to help find the correct tire size for your vehicle.

To convert tire size P205/70R13 to inches, you must know what these numbers represent.

So let us know P205/70R13 in simple words:

First number “205” indicates the tire’s width in millimeters.
Second number “70” refers to the aspect ratio, which is the height of the tire’s sidewall as a percentage of its width.
Third number “R13” refers to a tire that is designed to fit a 13-inch diameter rim.

Therefore, when converting the tire size P205/70R13 to inches, it can be concluded that the width of the tire will be approximately 8.1 inches ( 205 mm= 8.1 in), and the sidewall height will be approximately 5.7 inches (70% of 8.1 inches = 5.7 inches).

How to convert P205/70R13 into Inches (imperial)?

To convert tire size P205/70R13 to inches (Imperial) –

1. Width conversion: To convert it to inches, you can use a conversion factor of approximately 25.4 millimeters per inch.

  • 205 millimeters/25.4 = approximately 8.1 inches
    So, the width of the tire is approximately 8.1 inches.

2. Aspect Ratio Calculation: To calculate sidewall height in inches, you can use the tire width (from Step 1) and the aspect ratio:

  • Sidewall Height = Width (in inches) * Aspect Ratio / 100
  • Sidewall Height = 8.1 inches * 70/100 = approximately 5.7 inches
    So, the tire sidewall height is approximately 5.7 inches.

3. Rim Diameter: The “R” in the tire size stands for “radial construction” and the last number “13” indicates the rim diameter in inches. In this case, it’s already in inches.
So, the converted tire size “P205/70R13” in inches (imperial) is approximately:

  • Width: 8.1 inches
  • Sidewall Height: 5.7 inches
  • Rim Diameter: 13 inches

How to convert P205/70R13 into Millimeters (metric)?

To convert the tire size P205/70R13 into millimeters (metric) –

1. Width Conversion: The first number in the tire size, “205“, represents the tire’s width in millimeters. Since it’s already in millimeters, there’s no need for conversion.

  • Width: 205millimeters

2. Aspect Ratio Calculation: The second number “70” is the aspect ratio, representing the tire’s sidewall height as a percentage of its width. To calculate the sidewall height in millimeters, you can use the tire’s width (from step 1) and the aspect ratio:

  • Sidewall height = Width (in millimeters) * Aspect Ratio / 100
  • Sidewall height = 205 millimeters * 70 / 100 = 144 mm millimeters
    So, the tire’s sidewall height is approximately 144 mm millimeters.

3. Rim Diameter: The “R” in the tire size stands for “radial construction” and the last number, “13” indicates the rim diameter in inches. To convert this to millimeters, you can use the conversion factor of approximately 25.4 millimeters per inch.

  • Rim diameter = 13 inches * 25.4 millimeters per inch = 330 mm millimeters
    So, the rim diameter is approximately 330 mm millimeters.

So, the converted tire size “P205/70R13” in millimeters (metric) is approximately:

  • Width: 205 mm
  • Sidewall Height: 144 mm
  • Rim Diameter: 330 mm

Alternate Tire Size of P205/70R13 For replacement

Tire Size Overall Diameter Difference
135/90R14 23.6″ (600 mm) -2.9%
175/70R14 23.7″ (602 mm) -2.6%
205/60R14 23.7″ (602 mm) -2.6%
245/50R14 23.7″ (602 mm) -2.6%
185/60R15 23.7″ (603 mm) -2.4%
195/70R13 23.8″ (604 mm) -2.3%
155/80R14 23.8″ (604 mm) -2.3%
225/55R14 23.8″ (604 mm) -2.3%
205/55R15 23.9″ (607 mm) -1.8%
225/50R15 23.9″ (607 mm) -1.8%
125/90R15 23.9″ (607 mm) -1.8%
175/65R15 24″ (609 mm) -1.5%
285/40R15 24″ (609 mm) -1.5%
175/80R13 24″ (610 mm) -1.3%
175R13 24″ (610 mm) -1.3%
195/65R14 24″ (610 mm) -1.3%
255/45R15 24.1″ (611 mm) -1.1%
235/60R13 24.1″ (612 mm) -1%
215/60R14 24.2″ (614 mm) -0.6%
195/60R15 24.2″ (615 mm) -0.5%
185/70R14 24.3″ (616 mm) -0.3%
215/55R15 24.3″ (617 mm) -0.2%
235/50R15 24.3″ (617 mm) -0.2%
175/75R14 24.3″ (618 mm) 0%
165/80R14 24.4″ (620 mm) 0.3%
165R14 24.4″ (620 mm) 0.3%
185/65R15 24.4″ (621 mm) 0.5%
265/50R14 24.5″ (622 mm) 0.6%
205/65R14 24.5″ (622 mm) 0.6%
345/35R15 24.5″ (623 mm) 0.8%
135/90R15 24.6″ (625 mm) 1.1%
225/60R14 24.6″ (626 mm) 1.3%
185/80R13 24.6″ (626 mm) 1.3%
185R13 24.6″ (626 mm) 1.3%
245/50R15 24.7″ (627 mm) 1.5%
205/60R15 24.7″ (627 mm) 1.5%
175/70R15 24.7″ (627 mm) 1.5%
225/55R15 24.8″ (629 mm) 1.8%
155/80R15 24.8″ (629 mm) 1.8%
155R15 24.8″ (629 mm) 1.8%
195/70R14 24.8″ (630 mm) 1.9%
185/75R14 25″ (634 mm) 2.6%
195/65R15 25″ (635 mm) 2.8%
255/55R14 25″ (636 mm) 2.9%
175/80R14 25″ (636 mm) 2.9%
175R14 25″ (636 mm) 2.9%
215/65R14 25″ (636 mm) 2.9%

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