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Is called the aspect ratio.

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Q: The ratio of height of a tire to its width?
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What does the 65 mean on a tire?

That is the aspect ratio , or ratio of width to height of the tire


Aspect ratio in relation to tires?

Aspect ratio is the height of the sidewall compared to th width of the tread, in a 70 series tire, the sidewall height would be 70% of the tread width.


What number on a tire indicates the height?

No number specifically indicates the height. You can however figure the height with a little math. As in 245/70-15 the 245 is the width of the tire in millimeters. The 70 is the aspect ratio which means the tire's height is 70% of the tires width. So on this example the height of the tire is 171.5 millimeters.


What does aspect ratio of a tire mean?

The aspect ratio of a tire means The ratio of height to width. Reference, Automotive Steering, Suspension, and Alignment, Book Fifth edition Chapter 3. Page 60.


What is the 50 in 225 50 r 17?

That's the ratio of the tire's height to it's width - at 50 (%) , they're equal.


What is outside to outside of tire measurement?

A typical tire measurement is given in three parts. Ex. 255/55/R17 This measure ment means: Tire width in mm/Aspect Ratio/ Radial design on a 17 inch wheel. The aspect ratio is the width/height of the tire. So in the example given the aspect ratio is: 55=255/height So find height 255*.55=140.25mm 140.25mm=5.5 inches So the overall height of the tire= (5.5*2)+17=28 inches You can use this series of calculations, or search for an online calculator that will do it for you.


What does 265 40 zr18 mean?

265 = Width of tire in Millimetres 40 = Ratio of height to width (aspect ratio) Z = Speed rating for over 150Mph (240Kph) R = Radial - the construction of the tire 18 = Diameter in inches of the wheel the tire is designed to fit. In summary, this tire is for a sports car with 18 inch wheels.


What does 130 90 16 tire size mean?

130 is the tire tread width in millimeters. 90 is the aspect ratio for the sidewall in relation to the width or in laymen terms it the height of the sidewall. 16 is the size wheel it fits in inches.


What does the tire size 235 75 R15 mean?

235 is the width of the tire in millimeters (9.4 inches) 75 is an aspect ratio between height and width, basically it tells you how large the sidewall of your tire is in relation to the tires width. 75 % of 9.4 is 7.05 which is the distance from the tread of the tire to the opening for the rim. R15 is the diameter of the rim that will fit that size tire in inches. e.g. you would need 15 inch rims. Just to make sure you have it down, if you had a 240/70/R18 you would have a 240mm wide tire, with a 70% aspect ratio (height to width), with 18 inch rims. Hope this helps!


What is the meaning of the mt90b16 in tire size?

MT 90 B 16 M = motorcycle code T = Tire Width Code 90 = Aspect Ratio (90%) B = Load Range 16 = Rim Diameter (inches) Aspect Ratio = Section Height/Section Width X 100


If you have a tire that is 20565R15 can you change tires with different sidewall ratio but have the same tire size 205 and rim 15 so a wider tire and a larger tire foot print?

205 is the width of your tire the 65 is an aspect ratio that determines how tall the tire is compared to the width


What do the three sets of numbers on tire size?

Say you have a tire size 205/60HR16:205 is the section width of the tire in millimeters. Section width is the overall width from sidewall to sidewall. Tread width is typically 90% of the section width. In the above size, the section width is 205mm.The second number is the aspect ratio. This is the percentage ratio of the sidewall height to section width. In the above example, the sidewall height is 60% of the section width.The last number is the wheel diameter in inches. So in the above example, the wheel diameter is 16 inches.The R in the size designation means the tire is a radial tire, as almost all car tires are. The letter in front of the R (H in the above example) is the speed rating of the tire. The speed rating is the maximum speed the manufacturer recommends for the tire.