T135/70R17 Tire Size in Inches & Millimeters

Tire size “135/70R17” 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 T135/70R17 to inches, you must know what these numbers represent.

So let us know T135/70R17 in simple words:

First number “135” 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 “R17” refers to a tire that is designed to fit a 17-inch diameter rim.

Therefore, when converting the tire size T135/70R17 to inches, it can be concluded that the width of the tire will be approximately 5.3 inches ( 135 mm= 5.3 in), and the sidewall height will be approximately 3.7 inches (70% of 5.3 inches = 3.7 inches).

How to convert T135/70R17 into Inches (imperial)?

To convert tire size T135/70R17 to inches (Imperial) –

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

  • 135 millimeters/25.4 = approximately 5.3 inches
    So, the width of the tire is approximately 5.3 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 = 5.3 inches * 70/100 = approximately 3.7 inches
    So, the tire sidewall height is approximately 3.7 inches.

3. Rim Diameter: The “R” in the tire size stands for “radial construction” and the last number “17” indicates the rim diameter in inches. In this case, it’s already in inches.
So, the converted tire size “T135/70R17” in inches (imperial) is approximately:

  • Width: 5.3 inches
  • Sidewall Height: 3.7 inches
  • Rim Diameter: 17 inches

How to convert T135/70R17 into Millimeters (metric)?

To convert the tire size T135/70R17 into millimeters (metric) –

1. Width Conversion: The first number in the tire size, “135“, represents the tire’s width in millimeters. Since it’s already in millimeters, there’s no need for conversion.

  • Width: 135millimeters

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 = 135 millimeters * 70 / 100 = 95 mm millimeters
    So, the tire’s sidewall height is approximately 95 mm millimeters.

3. Rim Diameter: The “R” in the tire size stands for “radial construction” and the last number, “17” 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 = 17 inches * 25.4 millimeters per inch = 432 mm millimeters
    So, the rim diameter is approximately 432 mm millimeters.

So, the converted tire size “T135/70R17” in millimeters (metric) is approximately:

  • Width: 135 mm
  • Sidewall Height: 95 mm
  • Rim Diameter: 432 mm

Alternate Tire Size of T135/70R17 For replacement

Tire Size Overall Diameter Difference
245/35R17 23.8″ (604 mm) -2.9%
215/40R17 23.8″ (604 mm) -2.9%
245/30R18 23.8″ (605 mm) -2.7%
215/35R18 23.9″ (607 mm) -2.4%
125/60R18 23.9″ (607 mm) -2.4%
125/70R17 23.9″ (608 mm) -2.3%
195/45R17 23.9″ (608 mm) -2.3%
255/30R18 24.1″ (611 mm) -1.8%
225/40R17 24.1″ (612 mm) -1.6%
225/35R18 24.2″ (615 mm) -1.1%
175/45R18 24.2″ (615 mm) -1.1%
205/45R17 24.3″ (616 mm) -1%
265/30R18 24.3″ (617 mm) -0.8%
185/50R17 24.3″ (618 mm) -0.6%
265/35R17 24.3″ (618 mm) -0.6%
225/30R19 24.4″ (619 mm) -0.5%
135/60R18 24.4″ (619 mm) -0.5%
235/40R17 24.4″ (620 mm) -0.3%
205/40R18 24.4″ (621 mm) -0.2%
235/35R18 24.4″ (621 mm) -0.2%
275/35R17 24.6″ (624 mm) 0.3%
175/55R17 24.6″ (624 mm) 0.3%
235/30R19 24.6″ (625 mm) 0.5%
215/45R17 24.6″ (626 mm) 0.6%
245/40R17 24.7″ (628 mm) 1%
195/50R17 24.7″ (628 mm) 1%
245/35R18 24.8″ (629 mm) 1.1%
285/30R18 24.8″ (629 mm) 1.1%
215/40R18 24.8″ (629 mm) 1.1%
245/30R19 24.8″ (631 mm) 1.4%
295/25R19 24.8″ (631 mm) 1.4%
285/35R17 24.9″ (632 mm) 1.6%
125/80R17 24.9″ (632 mm) 1.6%
215/35R19 24.9″ (633 mm) 1.8%
125/70R18 24.9″ (633 mm) 1.8%
225/45R17 25″ (634 mm) 1.9%
295/30R18 25″ (635 mm) 2.1%
255/35R18 25″ (635 mm) 2.1%
305/25R19 25″ (635 mm) 2.1%
255/40R17 25″ (636 mm) 2.3%
145/70R17 25″ (636 mm) 2.3%
255/30R19 25.1″ (637 mm) 2.4%
225/40R18 25.1″ (637 mm) 2.4%
205/50R17 25.1″ (638 mm) 2.6%
295/35R17 25.1″ (638 mm) 2.6%

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