A700c wheel (ISO size 622) has the same diameter as a 29 inch wheel. 700c is the current standard for road bike, Cyclocross, and some touring bikes. But then for wire bead tires at half the price, only one 559/26″, zero 584/27.5″ and two 622/700c tires are listed. And no other such “ultimate” touring tires are listed for any other Theadded volume also makes for a larger overall diameter of the wheel. Many tests have been done, and in some cases a 27.5” “plus” tire will roll as fast, or faster than a standard 29 Weirdcomparison.. it's a smaller diameter tire. In the same width they are ~45g different between 29 and 27.5. So 150g difference between plus and non. Not sure where you got your numbers though. Specialized website puts the 2.3 27.5" tire almost 200g below the 2.6 weight you noted. Full stats on the ground control - Atfirst the 700C wheel was fitted with a 35C tire. The total diameter of the wheel including outer tire was about 700mm (27.5 inches) , but later the outer tire became thinner and thinner, so now the 700C total diameter of the rim plus outer tire is less than 700mm. Take 23C as an example, it is only 668mm. The"29" refers to the diameter of the wheels these bikes use (with a tire mounted). 29&In addition, MTB wheels have the same diameter as 700c road bike wheels. 29er bikes also referred to as two-niners and 29&Mountain bikes with 29-inch wheels are known as prime MTBs. The "29" refers to the diameter of the wheels these bikes use Shootout Wheel Wars—29 vs 27.5 vs 26. This story first appeared in our March 2012 issue, when only a few companies were offering bikes with 27.5-inch (650b) wheels. At that time, the dilemma for most riders was to choose between bikes with either 26 or 29-inch wheels. The larger-diameter 29-inch wheel has noticeably less rolling resistance. Im interested in the total diameter of Nobby Nics: 29 × 2.25 27,5 × 3.0 But a 29+ is much more expensive than a 27,5+ one. So if I could get approx the same total diameter (wheel+tyre) like on a normal 29er then 27,5+ would be fine for me. Save Share. Reply Quote. 1 - 20 of 26 Posts. 1 2. Justas a 700C wheel is the same diameter as a 29” (29er) wheel, 650B shares the exact same rim diameter as 27.5”. As it happened, the bike industry came to describe and market road category (drop-bar) products in “C” and millimeters, and mountain bike products in inches. Well, kind of. YTIa.

27.5 vs 29 wheel diameter