Frequent question: What does 77H mean on a motorcycle tire?

The numbers (77) represent the load carrying capacity of the tire. In this case, 77 means 908 pounds. A typical load rating chart shows 47 or 386 lbs all the way up to 87 or 1,202 lbs. The letters (H) represent the speed rating of the tire. In this case, H means a top speed of 130 miles per hour.

What does 71 h mean on a motorcycle tire?

Alpha Tire Codes

It seems to fit with a standard alpha system, except for the last two figures: 71 H . Here, 71 indicates the load index (see Load Index Chart ). The “H” is a speed rating.

What does the W mean on motorcycle tires?

The width is the overall dimension as measured from one edge of the tire to the other. The Aspect ratio is a percentage in relation to the height of the sidewall as compared to the width. Rim diameter corresponds to the rim size the tire will fit on and is the measurement of the inside of the tire.

What do the letters on motorcycle tires mean?

The first number is the tire’s width in millimeters; the second represents the tire’s aspect ratio, which describes the tire’s sidewall height as a percentage of its width. In this case we have a tire that’s 130mm wide and 70mm high. R means this tire’s radial, and 17 tells us it fits a 17-inch rim.

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What does 81H mean on motorcycle tires?

The service description is a combination of the load index (81) and the speed rating (H). The service description in our example size is “81H.” Please see charts below for load index and speed ratings.

What speed rating is R?

SPEED RATING

SPEED SYMBOL SPEED (mph)
R 106
S 112
T 118
U 124

What does 55w mean on a tyre?

4) LOAD INDEX & SPEED RATING

The “W” represents the maximum speed for the tyre when it is correctly inflated and being used under load, in this case 270km/h.

What does V mean on motorcycle?

The speed symbol V (currently V = greater than 210 km/h) was redefined as V = 240 km/h. … Hereby, the factory identifier is set in brackets in order to emphasise that the permissible maximum speed is more than V (240 km/h) or W (270 km/h). For example: (69 V), (69 W).

What does TL stand for on tires?

Apart from structure (radial or diagonal), size and profile, tyres can also be distinguished by whether they are TT (tube type) or TL (tube less) tyres. In this case, the former features an inner tube while the latter does not.

What does B mean on a tire?

If your tire size starts with LT rather than a P than it identifies the tire as a Light Truck tire. … R indicates the construction used within the tires casing. R stands for radial construction. B means belted bias and D stands for diagonal bias construction.

How do you read motorcycle tire dates?

Look on the outer sidewall for the acronym “DOT,” which should be followed by a series of numbers. The last four digits are what you need to determine when the tire was manufactured. The first two numbers represent the week, and the second pair indicates the year.

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How do you read a DOT tire date code?

Remember that the last four digits of the code are the date the tire was manufactured. You can check the first two digits of the DOT code to know the week of the manufacturing. The last two digits will reveal the manufacturing year. For instance, when it was written in 0203, the manufacturing year was 2003.

Are wider tires better on a motorcycle?

Narrower, lighter tires are definitely better for performance and handling, but they can’t handle as much horsepower. … If you enlarge the contact patch by making the tire wider, you get more grip and that larger contact patch dissipates more heat and provides more material to wear away, so the tire lasts longer.