A twin boundary or composition surface separates the two crystals. Crystallographers classify twinned crystals by a number of twin laws. These twin laws are specific to the crystal system. The type of twinning can be a diagnostic tool in mineral identification.
The industry responded by making middleweight tires, marked 26 x 1.75 to fit the same rims. Although they are still called 26 inch, these tires are actually 25 5/8, not 26. This same rim size was adopted by the early pioneers of west-coast klunkers, and became the standard for mountain bikes. Due to the appetite of the market, you can get tires as narrow as 25 mm to fit these rims, so you wind up with a 26 inch tire that is more like 24 7/8 in actual diameter! A second number or letter code would indicate the width of the tire. (26 x 1.75, 27 x 1 1/4...650B, 700C...)
RE: I&#39;m a 5&#39;4&quot; adult. Is a 24 inch tire bike the right size for me? I&#39;m interested in a cruiser bike, not a mountain bike if that helps with answering the question.hey are halfway between mountain bikes and race bikes. You will be a lot more likely to use the bike to go places (rather than just to ride around) if you have an efficient bike. Most companies also make nice commuter bikes that are practical, efficient and well-built.