If you’re touring in parts of the world where 26in is still the de facto standard for adult bikes, this makes sense from a spares point of view. There are, however, very few 650b tyres under 38mm wide and the rims themselves tend not to be designed for narrower ones anyway, so do consider if you might want the option to go narrower for road riding in the future.Ī very small minority of gravel/adventure/touring bikes, such as the Surly Long Haul Trucker Disc, are designed to take 26in tyres, i.e. If you want as much tyre volume as possible and your gravel riding sometimes resembles mountain biking, 650b makes a lot of sense.Ī 650b × 47mm tyre is balloon-like in its ride quality and some frames will let you go larger still, edging fully into mountain bike territory. You’ll have more tyre options if you opt for 700c in this case and you’ll be able to go as narrow as 28mm for pure road riding (usually – so follow manufacturer recommendations here), or about as wide as your frame will take at the other end of the spectrum (few gravel frames will accept a tyre larger than 700 × 45mm). If your gravel riding is more like all road, you might want tyres in the sub-40mm range that will work well both on and off tarmac. It’s best to follow manufacturer recommendations here, to avoid costly disappointment.Ĭhoosing between 650b or 700c largely comes down to personal preference but, if you’re unsure which way to go, think about what size tyres you’re most likely to want on your bike. A frameset designed for 700c wheels may accommodate the diameter of chunky 650bs, but lack the clearance at the stays or fork for the width of the tyres. Having said that, you can’t assume that both sizes will work. 650b × 47) is similar to that of a 700c wheel fitted with a much narrower tyre (around 700 × 28 to 30mm, approximately). This works because the rolling diameter of a fat 650b tyre (e.g. Many framesets are designed to accept both sizes, with the option to fit wider tyres if you opt for 650b. The vast majority of gravel bikes accept either 700c (standard road size, actual rim diameter equal to 29in mountain bike rim) or smaller 650b wheels (actual rim diameter equal to 27.5in mountain bike rim). Overall, Deda’s Trenta2 offers low weight, great quality and fine performance, all at an appealing price.ħ00c wheels may provide more road-suitable tyre options, but 650b will provide more tyre volume. With good sidewall support for big tyres, they’re ideal for all-round gravel riding, particularly if you want to travel fast and light. They’re taut and very responsive to acceleration demands, from any speed, and willingly sustain speed on the flat, with help from their aerodynamic rim shape. The Trenta 2s immediately injected life into the ride feel of our tester’s usual gravel machine. The 6061 alloy hubs have a 17mm axle, and four-pawl freehub, which can be supplied as Shimano/SRAM HG, SRAM XDR or Campagnolo N3W for no extra cost.Įach wheel has 24 straight-pull spokes, crossed twice, and including the rim tape, valves and end caps, the set weighs an impressive 1,475g. They’re tubeless-ready, with tape pre-installed, and are supplied with tubeless valves, 12mm thru-axle end caps, and Center Lock rotor lock rings. It has 32mm-tall rims, which are 29mm wide externally and 23mm internally and are made from high-modulus (stiffness) unidirectional 3k carbon fibre. Pros: Weight modern rim dimensions simple setupĭedacciai’s (Deda’s) Elementi Trenta2 wheelset is designed for high performance on gravel.The Deda Elementi Trenta2 wheelset has 32mm-tall rims. In short, you get road-bike weight and performance with all-road durability and versatility.
The Carbo Graffs offer a little more urgency in their response, generate speed faster and feel racy. The wheels come with wheel bags and tubeless valves, and weigh 1,463g with tape, valves and 12mm end caps fitted. The 24 straight-pull, flat, double-butted Sapim steel spokes are crossed twice, and the price listed gets you an XDR freehub, with HG and N3W freehubs costing £45 extra.
Their CNC-machined 7075 T6 aluminium hubs contain Miche sealed bearings, which can be adjusted without removing the wheels.
The rims have an asymmetric shape, to counteract the specific drivetrain and braking forces experienced by each wheel, and come with tubeless tape installed. It features 30mm tall, UD carbon-fibre rims, which have 22mm internal width and a hookless bead. Miche’s Carbo Graff is an evolution of the aluminium Graff wheelset, and is optimised for 35mm to 45mm tubeless tyres.
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