what are the tire size numbers?
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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.
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The last four digits of this code tell you when your tire was manufactured. The first two numbers indicate what week of the year it was made (out of 52 weeks per year), and the second two numbers represent the year. For example, 5200 would reveal that a tire was manufactured during the 52nd week of the year 2000.
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33-inch tires work well with rims that measure 15 or 16 inches in width, while 35-inch tires should only be used with rims that are at least 17-inches wide.
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Hubcap size is actually easiest determined by looking at your tire not your wheel. On every tire there is a series of letters and numbers (which define the exact size and type of tire that you have) that ends with an R and then a number like 14, 15, or 16 etc.
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6/32" or higher: Your tire's tread depth is sufficient. 5/32": If snow-covered roads are a concern, you should consider replacing your tires. ... 2/32" or lower: Your tires are legally bald, and it's time to replace them.
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Measure the diameter of the existing tire, as illustrated above (D), or look on the tire for the size (it looks like this: nn" x n.n"). If you find the tire size, the first dimension is the tire diameter, the second dimension is the tire thickness. Record the tire diameter, as this also represents the bike frame size.
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The important number on the side of your tyre - the indicate the size, profile and the weight and speed ratings of your tyre. These number represent, in order, the section width (225), aspect ratio (45), construction (R), rim diameter (19), load index (92) and speed rating (W).
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If your wheel set is going to be used for both road and gravel, select a road rim and tire sizes 25mm-50mm. This means an internal rim width of at least 20mm. Ideally, for a 40mm tire intended for gravel roads select a 21-24mm internal rim width. Wider internal widths limit the smallest tire size you can use.
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['H. Height. 79.5 in. (202 cm) Height. 79.5 in. (202 cm)', 'Length. 158.3 in. (402 cm) Length. 158.3 in. (402 cm)', 'Width. 64 in. (162.5 cm) Width. 64 in. (162.5 cm)', 'WB. Wheelbase. 115.5 in. (294 cm) Wheelbase. 115.5 in. (294 cm)', 'Ground. Clearance. 13 in. (33 cm) Ground. Clearance. 13 in. (33 cm)']
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A standard road tire is 700c x 23mm, indicating a tire diameter of approximately 700mm and a width of 23mm.
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['63 inches.', '84 inches.', '94 inches.', '108 inches.', '120 inches.']
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A Brief History of 700C Many years back, there were four different variations of tires sizes available known as 700A, 700B, 700C, and 700D. They had different bead seat diameters, but all shared the same characteristic of being exacly 700 millimeters on the outside diameter.
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The tire industry standard for tread depth in the United States is measured in one thirty-second of an inch (1/32") increments (millimeters are used in countries observing metric standards). New tires typically start with a tread depth of 10/32" to 12/32", with some off-road tires topping 15/32".
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New tires have an average tread depth of 8 to 9 millimeters (10/32 to 11/32 inches). As you drive, the tread will wear down. A tire with a tread depth below 1.6 millimeters (2/32 inches) lacks grip.
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Tires made in the United States have the DOT serial number located on the inside sidewall near the rim. The letters “DOT” are followed by eight to thirteen letters and/or numbers that identify where the tire was manufactured, tire size and the manufacturer's code, along with the week and year the tire was manufactured.
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What Is the Difference Between a 65 & 70 Series Tire? The series number in a tire-numbering system refers to the aspect ratio of the tire's sidewall height to its width. A series 65 tire's height is 65 percent of its width, a series 70 tire's height is 70 percent of its width and so on.
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['80cm x 150cm. (2\'7" x 4\'11")', '120cm x 170cm. (3\'11" x 5\'7")', '160cm x 230cm. (5\'3" x 7\'7")', '200cm x 300cm. (6\'7" x 9\'10")', '240cm x 340cm. (7\'10" x 11\'2")', '280cm x 360cm. (9\'2" x 11\'10")', 'Runners.']