Tires 101: An Introduction: Difference between revisions

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So, we can look at a tire and read a little bit of the code. But how do the numbers interrelate?

*The nominal width is approximately how wide the tire is at the widest part of the tread. In this case, the width is about 120 mm. There is some variance from tire maker to tire maker, and from brand to brand, so one tire may be 124 mm wide while another is 118 mm.

The nominal width is approximately how wide the tire is at the widest part of the tread. In this case, the width is about 120 mm. There is some variance from tire maker to tire maker, and from brand to brand, so one tire may be 124 mm wide while another is 118 mm.

The aspect ratio is approximately how tall the tire is in relationship to its width. Thus, a 120/80 tire is about 96 mm tall, from the bead to the tread surface (120 x 0.8 = 96). [[Ride height and different tire sizes|See here]] for more information on tire height.

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The speed rating indicates at what maximum speed the tire is considered safe for continuous use. In this instance, the V stands for speeds up to 149 mph. A table of speed ratings is listed below.

The last number is the diameter of the wheel that the tire is intended for. In this case, we are talking about a 16 inch rim for the tire.

====American sizing====

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 So, we can look at a tire and read a little bit of the code. But how do the numbers interrelate?
-*The nominal width is approximately how wide the tire is at the widest part of the tread. In this case, the width is about 120 mm. There is some variance from tire maker to tire maker, and from brand to brand, so one tire may be 124 mm wide while another is 118 mm.
+The nominal width is approximately how wide the tire is at the widest part of the tread. In this case, the width is about 120 mm. There is some variance from tire maker to tire maker, and from brand to brand, so one tire may be 124 mm wide while another is 118 mm.
 The aspect ratio is approximately how tall the tire is in relationship to its width. Thus, a 120/80 tire is about 96 mm tall, from the bead to the tread surface (120 x 0.8 = 96). [[Ride height and different tire sizes|See here]] for more information on tire height.
@@ Line 31: / Line 31: @@
 The speed rating indicates at what maximum speed the tire is considered safe for continuous use. In this instance, the V stands for speeds up to 149 mph. A table of speed ratings is listed below.
 The last number is the diameter of the wheel that the tire is intended for. In this case, we are talking about a 16 inch rim for the tire.
 ====American sizing====