120 indicates the width of the tire (in millimeters) 70 indicates the aspect ratio (between height and width) 12 is the rim size (in inches) 51 refers to the speed rating. S refers to the type of construction.
Following the tire type letter is the section width of the tire, which is listed in millimeters. This is the widest point from sidewall-to-sidewall, so a larger number indicates a wider tire. In this case, the tire has a width of 215 millimeters.
What is the aspect ratio of a tire?
Aspect ratios are delivered in percentages. Tire makers calculate the aspect ratio by dividing a tire's height off the rim by its width. If a tire has an aspect ratio of 70, it means the tire's height is 70% of its width.
Load- Carrying Capacity Index Ratings
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How wide is a 200mm motorcycle tire?
This formula is a quick way to get the tire diameter of those metric tires that are common on just about everything stock. For example a 200/55R18 would be around 26.7 inches tall and 7.9 (200mm/25.4) inches wide.
How wide is a 145 tire?
145/65R15 tires have a diameter of 22.4", a section width of 5.7", and a wheel diameter of 15". The circumference is 70.4" and they have 900 revolutions per mile. Generally they are approved to be mounted on 4-5" wide wheels.
Aspect ratios are delivered in percentages. If a tire has an aspect ratio of 70, it means the tire's height is 70% of its width. Lower aspect ratio tires, such as a 60 series, generally offer vehicle handling performance advantages over higher aspect ratio tires, such as a 75 series.Apr 1, 2021
The H speed index means the tire is rated at a maximum of 130 mph. Load and speed index maximums are very important for you to consider when purchasing tires. The higher the load number, the more weight the tire can handle.Apr 4, 2019
What does the H mean on my tire?
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 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.Jun 6, 2021