Aerospace Cycling

All answers for Motorcycle



Question: What Do Numbers And Letters Mean On Motorcycle Tires

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.

What does B mean on motorcycle tire?

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 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 M mean on a motorcycle tire?

The M stands for a tire that meant to be used on a motorcycle, the following letter is the width code, and the number (such as 90 in this case) still stands for the aspect ratio.

What does 74 h mean on a motorcycle tire?

For example, a tire with the sizing MT90B16 74H has a load index of 74 and a speed rating of H (130 mph). Note: Newer tires that have a width of 150+mm will only use metric sizing. When the alphanumeric system was created, motorcycle tires didn’t get much bigger than an MV85 (150mm).

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 H or V speed rating mean?

Identification. H-rated tires are rated for a maximum speed of 130 mph. The V rating is the next rating faster, and V-rated tires are good to 149 mph. Both H- and V-rated tires are considered to be performance-touring tires.

What speed rating is R?

106 mph Speed Rating Maximum Speed Q Up to 100 mph R Up to 106 mph S Up to 112 mph T Up to 118 mph.

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.

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 size is MT90B16?

The MT90B16 is a 130/90B16.

Can I mix H and V rated tires?

Premium Member. There’s no problem mixing V & H as long as you don’t exceed the H ratings max speed.

How do you read tire numbers?

The two-digit number after the slash mark in a tire size is the aspect ratio. For example, in a size P215/65 R15 tire, the 65 means that the height is equal to 65% of the tire’s width. The bigger the aspect ratio, the bigger the tire’s sidewall will be.

What do the numbers and letters on tires mean?

The number is the load rating, or the amount of weight that it can handle. The letter is the speed rating, or the maximum speed the tire is built for. Consult a load and speed index to find out what your tire’s specific rating means.

Can I use ZR tires instead of R?

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.

What does H and T mean on tires?

The codes on the sides of tires are unfamiliar to most car and truck owners, but knowing what the codes mean is important to choosing the proper tires. The H/T on tires stands for highway/terrain.

What happens if you go faster than tire speed rating?

Some of those states acted without consulting the tire industry. Safety advocates and tire experts say that habitually driving faster than a tire’s rated speed can generate excessive heat that damages the rubber, with potentially catastrophic results.

What does 72h mean on a motorcycle tire?

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. Now sometimes we will see a ZR in the tire size and then a different Load Rating / Speed Index label to follow.

What does 69W mean?

Load rating / index To determine your load index, locate the number on the sidewall of one of your tyres and compare it with the load index table. Example: 160/60R-17 (69W). So this tires load rating would be 325 kg or 720 lbs.

What does 87W mean on a tyre?

As you can see below all of these number correspond with an alternate number being how much weight that one tyre can hold, For example if you have a small car like a Nissan Tida or of similar shape vehicle your tyre size is roughly 175/65R14 87W meaning that one tyre can carry 545 Kgs each, meaning the tyres alone can.

What does 75T mean on a tyre?

Bridgestone B290 155/65 R14 75T Specifications 14 inches, stands for the diameter of the wheel that the tyre is designed to fit. Radial construction.R stands for radial-ply construction. 387. 387 is the load index i.e. the maximum weight each tyre can carry at full speed.

What does the B stand for in MT90B16?

MT, MH, MJ etc = Tire Width, 90 = Tire Profile, B = Rim Diameter.

What is the difference between MT90B16 and MU85B16?

The next number is not the height, it is the aspect ratio. 90 means the height is 90% of the width and the 85 is 85% of the width, so MT90 would be 130mm wide and 117 mm high, MU90 would be 140mm wide and 126mm high, MT85 would be 130mm wide and 110mm high, MU85 would be 140mm wide and 119mm high.

What is the difference between a Dunlop D404 and a Dunlop D402?

D401 is for HD cruisers, D402 is for HD touring bikes, and D404 is for metric cruisers.