Newmen embraces 32-inch and 30.5-inch wheels with its new Streem G.48 gravel wheels

The market for large diameter wheels continues to grow, and Newmen has just introduced its new Streem G.48, which will also be available in 30.5 and 32-inch versions. The German brand thus expands its commitment to sizes that, until recently, barely appeared on experimental bicycles and are now starting to appear in all catalogs.

Newmen confirms 30.5 and 32-inch wheels for gravel

Newmen has presented the Streem G.48, a new carbon wheelset for gravel that will be available in three diameters: 700c, 30.5, and 32 inches. The conventional version is the first to hit the market, while the two larger sizes are expected to arrive later, still without a specific release date.

Newmen had already taken its first steps with the 32 inches. We saw the brand at the Cube with which Ondrej Cink competed in the World Championship, and in October, it incorporated this size into its Streem G.62, a high-profile wheelset for gravel that, for now, is marketed exclusively on factory-built bicycles.

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With the new G.48, Newmen expands its development of large diameter wheels towards a model with a more contained profile and, above all, incorporates an intermediate size that could play an important role in the coming years.

30.5 inches are starting to gain prominence

Although 32-inch wheels are capturing a good part of the industry's attention, 30.5 inches have quickly transitioned from being an experimental proposal to appearing as a real alternative.

At the beginning of October we learned that Schwalbe was developing 30.5-inch tires, a size situated between the current 29 and the future 32 inches. Its main interest lies in offering a smaller diameter alternative perhaps for the smaller sizes of models developed for 32".

But the evolution has not been limited to gravel. Shortly after, Cube took the 30.5-inch wheels to the Enduro World Championship 2026, with a modified Fritzz for Zakarias Johansen. That bicycle used a mullet configuration, with a 30.5-inch front wheel and a 29-inch rear wheel. Newmen's incorporation represents another advance for this format. 

Streem G.48: carbon, 48 mm profile, and up to 1,400 grams

Beyond the new diameters, the Streem G.48 features a construction designed to combine aerodynamics, lightness, and the ability to roll over uneven terrain.

Its carbon rim has a 48 mm profile, 45 mm external width, and 27 mm internal width. Newmen maintains a rounded profile design that, according to the brand, allows it to absorb small irregularities in the terrain and improve stability against crosswinds.

The wheels also incorporate the Aero Valve System, a system that hides the valve inside the rim and with which Newmen claims to save approximately 0.5 watts of aerodynamic resistance.

Initially, two configurations are offered for 700c:

Both use tubeless-compatible rims with a hook for the tire bead. The wheels are hand-assembled at Newmen's facilities in the Czech Republic.

• Streem G.48 CS: 21 Vonoa carbon spokes, with an announced weight of approximately 1,400 grams per set.
• Streem G.48: 24 Sapim CX-Ray steel spokes, with a declared weight of 1,550 grams per set.

Prices and availability

The new Newmen Streem G.48 initially arrives in two 700c versions, with the following recommended official prices:

• Streem G.48 CS with carbon spokes: €1,690 per set (€777 for the front wheel and €913 for the rear), with availability announced soon.
• Streem G.48 with steel spokes: €1,390 per set, with arrival expected in spring 2027.

For the future 30.5 and 32-inch versions, prices and commercialization dates have not yet been communicated.