This is identifying the manner in which the tire was constructed, radial, bias belted, or standard bias/cross ply. 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.
What is the B in motorcycle tire size?
Metric Tire Sizes: (Most Common Motorcycle Tire Format)
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. The letter between the second and third numbers, either R or B will tell if you if the tire is Bias Ply or Radial.
What does Z mean on motorcycle tires?
The Z, before the letter R for radial tire, designates a tire capable of speeds in excess of 149 mph. Manufacturers will place the Z, the highest rating on the speed index chart, in this position.
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’s the difference between r17 and zr17?
can a zr17 tire fit on an r17 rim? … ZR basically means the tire is adapted for speeds above 149mph. ZR tires includes the speed ratings V(149mph), W(168mph) and Y(186mph). The R stands for radial.
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 wide is a 250 motorcycle tire?
|Diameter inches (mm)||25.87 (657.2)||25.56 (649.2)|
|Width inches (mm)||9.84 (250)||9.45 (240)|
|Circum. inches (mm)||81.29 (2064.65)||80.3 (2039.52)|
|Sidewall Height inches (mm)||3.94 (100)||3.78 (96)|
What does 55w mean on a motorcycle tire?
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. In this example, 55% of 180 millimeters is 99 millimeters or 3.9 inches. The first letter is the speed rating.
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 69 W mean on a tire?
This number represents the tire’s load carrying maximum capacity at maximum pressure. The load rating is found after the tire size. Example. 160/60R-17 (69W). So this tires load rating would be 716 lbs or 324 kg.
What speed rating is R?
|SPEED SYMBOL||SPEED (mph)|
Does a V2 engine exist?
A V-twin engine, also called a V2 engine, is a two-cylinder piston engine where the cylinders share a common crankshaft and are arranged in a V configuration.
What is better bias or radial motorcycle tires?
Ultimately, bias tires are suitable for vehicles traveling at moderate speeds, with small to medium-sized engines and flexible chassis. They are also suited to heavy or heavily loaded motorcycles. Radial tires are needed for more powerful vehicles with very rigid chassis and for more sporty purposes.
Can I use R tires instead of Zr?
The Z in ZR corresponds to an old label used by manufacturers to indicate that the speed index is higher than V, i.e. 150 mph. Thus, a ZR tyre has a speed index of V, W, or Y. … There is therefore no difference between a ZR or an R tyre with the same speed index.
Can I mix V and W rated tyres?
Mixing tyre speed ratings isn’t recommended. If you are in a situation where you must mix tyre speed ratings (after an emergency puncture, for example) then make sure the lower-rated tyres are on the front axle to prevent turning more sharply than you intended (oversteering).
What does R mean on tyres?
The tyre designation R, which comes before the rim diameter marking, means that this tyre is a radial tyre. Other examples are “B” for Bias-ply or “D” for Diagonal construction. Radial tyres are the most common tyres on the road today.