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Friday, December 4, 2009

Understanding Tire Terminology

Understanding Tire Terminology of Mountain Bikes.

ROTATION DIRECTION
If the tire’s tread pattern or even compound is designed to work while rolling in a specific direction, the company will stamp their recommended rotating direction. Follow their advice or your buddies will razz you if they notice you’ve mounted the tire backwards. Some tires have bidirectional tread so you don’t need to worry.

COUNTRY OF ORIGIN
Get the magnifying glass out. This can be in tiny type.

HOT PATCH
Normally, a rectangular, multicolored ID stencil that lists the tire model and tire size. Other information can include the compound, casing construction and bead type. The hot patch is located on the drive side of the wheel (on bidirectional tires, the hot patch might be located on the non-drive side or the tire maker will use a hot patch on both sides).

MOLD NUMBERS
The manufacturer’s mold number doesn’t mean anything to the rider. Factory workers use this number to place the correct tires in the correct molds for curing.

AIR PRESSURE RANGE
These are recommended minimum and maximum air pressures for the tire. This tire should be used with at least 30 psi and no more than 50 psi. For those readers enjoying MBA in a foreign country, the other numbers represent the same thing (psi minimums and maximums) in bar’s and kpa’s.

TIRE SIZE (millimeters)
There are two numbers inside the parentheses. The first is the tread width target in millimeters. The second is the metric diameter of the bead (all 26-inch tires will show the number 559).

TIRE SIZE (inches)
The first number is the tire diameter and the second is the tire’s width. In this case, it is a 26-inch tire that is 2.5 inches wide.

Get the best tire for special adenture with Mountain Bikes

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