e-bike rim / tire – ETRTO

MTX650B-wheel-size-comparison-diagramsheldonbrown.com/tire-sizing : If two tires are marked with sizes that are mathematically equal, but one is expressed as a decimal and the other as  fraction, these two tires will not be interchangeable. If you use a very narrow tire on a wide rim, you risk pinch flats and rim damage from road hazards. If you use a very wide tire on a narrow rim, you risk sidewall or rim failure. This combination causes very sloppy handling at low speeds. Unfortunately, current mountain-bike fashion pushes the edge of this. In the interest of weight saving, most current mountain bikes have excessively narrow rims. Such narrow rims work very poorly with wide tires, unless the tires are overinflated … but that defeats the purpose of wide tires, and puts undue stress on the rim sidewalls.ETRTO285455451Wheelsizeindustry-nine-torch-ultralight-rim-tire-width-recommendationbikerumor.com/2016/match-bicycle-tire-width-rim-width-best-results The basics are that if you run a rim that is too wide for a particular tire you have a lot more issues with tire and rim damage, as the rim is much more likely to bottom out on lateral rock impacts causing tire or rim damage.
stans-notubes-wideRight-tire-shape-chart Information for DT Swiss MTB rims. The same model of tire achieves different effective outer dimensions on different width rims. The more aggressive/downhill oriented the riding style and trails, the stronger the tires and rims should be. Currently tires up to 2.50″ wide are referred to as “standard”. Tires from 2.60″ to 3.25″ are referred to as “Plus”. All sizes beyond 3.25″ are referred to as “fatbike” format. dt swiss rim tyredt1EwkOptire sizemxxis 275ebike-mtb.com/choosing-right-components-e-mtb: E-MTBs have bigger needs: lightweight tires with a thin casing and minimal tread just won’t do. Forget worrying about rolling resistance when you’ve got pedal-assist. If you pick tires as a weight-saving element then you’re likely to encounter repeated punctures and lose stability. Aggressive tread generates traction, and you want tires with a width of at least 2.35″. A weight of 800 grams or more is a good indication of increased puncture resistance. The Kenda Honey Badger EDC, MAXXIS Minion DHR II Double Down and Schwalbe Magic Mary Super Gravity tires are all good options. DT Swiss have unleashed E-MTB-specific wheels with thicker spokes, wider flanges, reinforced wider rims and bigger hubs that have a stronger axle and a strengthened freewheel. Moreover, bigger bearings and ratchets as well as the reinforced steel freehub are designed to increase the lifespan of the wheels. They’re designed for use with system weights of up to 150 kg, which is a full 35 kg more than former wheel sets.

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