Although best known for its deep carbon rims and disc wheels, Zipp has produced a number of alloy wheels over the years. The latest 30 Course is available for rim or disc brakes, and in clincher or tubular rim versions – we’ve tested the tubular disc model.
Manufacturers' claimed wheel weights are usually optimistic, but our wheels hit the combined 1615g total exactly – the clincher version is 1650g. The ergonomically curved and helpfully long alloy quick-release skewers, with alloy nuts and brass seats, are superb quality and add just 88g.
For all-round compatibility, Zipp supplies the wheelset with end caps that can be changed by hand to work with 12mm or 15mm front, and 12x135mm or 12x142mm rear thru-axles.
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The 30 Course rims are 25mm wide and 26mm deep, making them shallower than Zipp’s feathery 202 Firecrest rim while borrowing some of that model’s low-drag and aerodynamically stable design. They’re laced with 24 Sapim CX Ray spokes to Zipp’s newest and most advanced disc hubs.
The 77/177D hubs have factory set bearing preload, removing the need to adjust it yourself, plus 17mm axles and a straight-pull flange layout to create a stiff and strong wheelset. If you’re after epic gearing, the 177D hub accepts the XD Driver freehub body, allowing use of SRAM’s 10-42 cassette.
With their wide and deep tubular rim bed and small central channel, the 30 Course rims are tremendously supportive for fat 33mm ’cross tubulars, and equally for 25mm-plus road rubber. We replaced a pair of 303 Firecrests with these, and although we gained 215g, these are far cheaper and share identical hubs.
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