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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. Each letter coincides to the maximum speed a tire can sustain under its recommended load capacity.
Does the R matter on tires?
For example, a tire with a speed rating “S” is rated for up to 112 mph, while a tire rated “R” is up to 106 mph. Remember that this isn’t a recommended cruising speed, but rather the maximum speed that tire type can withstand.
What does speed rating R mean?
Speed rating R allows for speeds up to 106 mph (170 km/h) under optimal conditions. Like Q speed rated tires, R rated tires generally prioritize a particular function or unique performance over maximum speed capability.
What does Z and R mean in tires?
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. R indicates that the structure is RADIAL. There is therefore no difference between a ZR or an R tyre with the same speed index.
What’s the difference between a 70 R tire and a 75 R tire?
The aspect ratio is a percentage of the section width. So if you have a 70-series tire, that means the sidewall height is 70 percent of the tire’s overall width. The “75” is the aspect ratio, and it indicates that the tire’s sidewall height is 75 percent of the claimed 205mm section width.
What does R 16 mean on a tire?
65 – This number is the Aspect Ratio, the ratio of sidewall height to width. R – Radial. 16 – This number designates the tire’s diameter in inches (i.e. 16″).
What is R TYRE size?
The letter R means the tyre is a radial construction. Almost all new car tyres are radials.
Can I use 55 tires instead of 65?
The 55 is the “height” of the tire. Generally not recommended as the new tire is about 6% smaller than the older one. From a strictly ‘will it fit’ stand point, yes. 205 is the height, the 55 is slightly wider than the 65 (it’s a ratio); and the 16 is the rim diameter.
Do higher speed rated tires wear faster?
You will gain nothing in any other aspect of the tire, such as tire life, treadwear, or what have you. In fact, the higher speed rating doesn’t have much to do with cornering ability, either. Just the speed factor of the tire itself. There is no relationship between the speed rating and the longevity of the tire.
What are H rated tires?
The speed rating on a tire indicates the fastest speed a tire can handle before it affects the tire’s performance. For example, “H” would translate to a tire that can only handle speeds up to 130 mph (or 210 km/h).
What is tire speed rating H?
If you recall from earlier, the “H” speed rating doesn’t appear after “G” but between “U” and “V.” It represents a maximum speed of 130 mph (210 kph) and is commonly found on sports sedans and coupes.
What does R mean on rims?
Expert Reply: The letter R means that the tire has a radial construction. The tire/wheel combo you referenced, part # AM30100 is an 8 inch bias-ply tire with a load range B on a steel wheel that has a 5 on 4-1/2 wheel bolt pattern.
What does RF mean on a tire?
RF stands for Reinforced. XL stands for Extra Load.
What does XL on a tire mean?
XL tyres have been especially developed for use with heavy loads. Generally speaking, the tyre name XL is used for heavy duty tyres. However, the labelling varies between tyre manufacturers. Sometimes you might have XL tyres that are also labelled “reinforced” (RF or RFD), or models labelled EL (Extra Load).
Can 65 tires go on 70?
Generally, series 65 tires are more expensive than series 70 tires. If you’re choosing a series 70 because you want a faster tire, your vehicle’s performace can suffer if the series 70 tire fits but is not compatible with the tire recommendations for your vehicle.
What does r75 mean on a tire?
This number means that your tire has an aspect ratio of 75%. In other words, your tire’s sidewall height (from the edge of the rim to the tire’s tread) is 75% of the width. In this case, the sidewall height works out to be 168 millimeters.
What size in inches is a 265 75R16?
METRIC TIRE TO DIAMETER (INCHES) CALCULATOR For example a LT265/75R16 would be around 31.6 inches tall and 10 inches wide.
What does 55 R mean on a tire?
In our example, the 55 means that the sidewall height is 55% of the 205-mm tread width. Construction. The letter following the profile height identifies the tire’s construction. Most tires sold today are an R, which means they are of radial tire construction.
What is the 55 on a tire?
The “55” grouping is the aspect ratio and is by far one of the most misunderstood dimensions. This is the height of the sidewall from wheel to tread relative to the width. Manufacturer’s represent this measurement in a percentage, so in our example, the sidewall is 129.25 millimeters — 5.08 inches — tall (235 x 0.55).
What is the meaning of 205 55R16?
Using our example size, 205/55 R16, this is what each number means: 205 is the width of the tyre tread in millimetres. This goes up in increments of 5. WhatTyre’s Search By Tyre Size function allows you to select widths between 165 and 305.
