# Your question: What do the numbers mean on motorcycle Tyres?

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The first number (180) is the width of the tire in millimeters. The second number (70) is the aspect ratio, which is the height of the sidewall. The height is 70% of the width or 126mm high. The third number (16) is the rim size. In this case, the rim size is 16 Inches in diameter.

## What does 55 W mean on motorcycle tires?

This means that the tire’s measurement from inside the bead (which sits inside the wheel rim holding the tire within it) to the top of the tire is 55% of the tire’s width.

## How do you read motorcycle tyre codes?

The “Z” indicates the speed rating of the tyre, which in this case means it is rated above 240kph/149mph. The “R” denotes that the tyre is of radial type construction. The “17″ denotes that the tyre is 17 inches in diameter whilst “M/C” means the tyre is for a motorcycle.

## How do motorbike tyre sizes work?

The first number indicates the width of the tyre in millimetres, taken from the widest point of the tyre. The second number indicates the aspect ratio (or height) of the tyre. This is represented as a percentage of the width of the tyre.

## What does B mean on motorcycle tires?

Obviously, “R” stands for radial and the “B” stands for bias-belted. If there is no letter between the aspect ratio and rim size that means the tire is just a standard bias ply tire/cross ply tire. … If radial and bias tires do get mixed and matched you’ll usually see the bias tire up front and the radial at the rear.

## What does Zr mean on motorcycle Tyres?

ZR basically means the tyre is adapted for speeds above 149 mph. ZR tyres includes the speed ratings V(149mph), W(168mph) and Y(186mph).

## What speed rating is R?

SPEED RATING

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

## 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).

## How do I know my bike tyre size?

If you read 120/70 – 12 51 S, it means:

1. 120 indicates the width of the tyre (in millimeters)
2. 70 indicates the aspect ratio (between height and width.
3. 12 is the rim size (in inches.
4. 51 refers to the speed rating.
5. S refers to the type of construction.

## How wide is a 160 motorcycle tire?

Tire Width Cross Reference Table

Permissible Rim Widths Metric Standard Inch
2.50, 2.75, 3.00 130 5.00
2.75, 3.00, 3.50 140 5.50
3.50, 4.00 150 6.00
4.00, 4.50 160 6.25

## Can I put a wider tire on my motorcycle rim?

Wide tires are not necessarily better. They usually “turn in” worse than a skinnier tire of the same make and model, and usually hurt fuel mileage. The common alteration of mounting a wider rear tire may make the bike harder to steer, even unpleasantly or unsafely so.

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## What does 71 h mean on motorcycle tire?

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. A typical speed chart will show J or 62mph all the way to W which is 168mph.

## 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 MT stand for on a motorcycle tire?

An alphanumeric designation such as MT90 17, represents the same tire size as 130/90 17. It’s just expressed in a different way. M means the tire is for motorcycle use, T is the tire width code, 90 is the aspect ratio and 17 is the rim diameter.