105/70R14 Tire Size in Inches and Millimeters

Understanding the 105/70R14 Tire Size

The 105/70R14 tire size is a common specification for compact vehicles. Here's a breakdown of what each component means:

• 105: This is the tire's width in millimeters from sidewall to sidewall.

• 70: This is the aspect ratio, representing the height of the tire's cross-section as a percentage of its width.

• R: This indicates radial construction, which is the standard for most modern tires.

• 14: This is the diameter of the wheel in inches that the tire is designed to fit.

Tire Size Conversion: Metric to Inches

Converting the 105/70R14 tire size from metric to inches involves a few calculations:

• Width: 105 mm is approximately 4.13 inches.

• Sidewall Height: 70% of 105 mm is 73.5 mm, which is approximately 2.89 inches.

• Overall Diameter: (2 x 2.89 inches) + 14 inches = 19.78 inches.

Technical Specifications and Dimensions

Here are the detailed specifications for the 105/70R14 tire size:

• Load Index: Typically around 84, indicating a maximum load capacity of 500 kg (1102 lbs) per tire.

• Speed Rating: T (up to 118 mph or 190 km/h).

• Tire Pressure: Recommended pressure is usually around 32 PSI.

• Tread Pattern: Designed for all-season use with moderate tread depth for balanced performance.

Compatible Vehicles for 105/70R14

The 105/70R14 tire size is commonly found on compact cars. Here are some examples:

• Honda Civic: Models from the late 1980s to early 1990s.

• Toyota Corolla: Select models from the early 1990s.

• Ford Fiesta: Models from the late 1980s to early 1990s.

These vehicles typically require tires that offer a balance of efficiency and performance, making the 105/70R14 a suitable choice.

Size Comparison and Alternatives

When considering alternative tire sizes, it's important to stay within a 3% variance of the original diameter to maintain speedometer accuracy and vehicle safety. Here are some alternatives:

• Alternative Size 1: 115/65R14 (Diameter: 19.95 inches)

• Alternative Size 2: 125/60R14 (Diameter: 19.88 inches)

Buying Guide and Recommendations

When purchasing 105/70R14 tires, consider the following:

• Verify the tire size on your vehicle's door placard or owner's manual.

• Ensure the load index and speed rating match your vehicle's requirements.

• Consult with a tire professional if considering alternative sizes.

FAQ Section

What does 105/70R14 mean?

It indicates a tire with a width of 105 mm, an aspect ratio of 70%, radial construction, and a wheel diameter of 14 inches.

How do I convert 105/70R14 to inches?

Convert the width (105 mm) to inches (4.13 inches), calculate the sidewall height (2.89 inches), and add twice the sidewall height to the wheel diameter (14 inches) for an overall diameter of 19.78 inches.

What vehicles use 105/70R14 tires?

Commonly used on compact cars like older models of the Honda Civic, Toyota Corolla, and Ford Fiesta.

Can I use a different tire size than 105/70R14?

Yes, but ensure the alternative size is within a 3% diameter variance to maintain vehicle performance and safety.

For more information on tire specifications and vehicle compatibility, visit our Tire Guide.

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