Still, you’re susceptible to punctures and tears from off-road and urban riding, and carrying a fat tire tube is more inconvenient than a standard tube. Join Bicycling All Access for in-depth bike reviews Fewer, But More Inconvenient, Flat Tiresįat bike tires can go flat for various reasons, but one advantage to the construction is their resistance to pinch flats: The tire sidewall is so tall that it’s more difficult to compress it fully and pinch the tube against the rim. These bikes have improved geometry, motors tuned for off-road speeds, and components built to withstand the added stresses. For this type of riding, consider a dedicated electric mountain bike. That said, most of the fat electric bikes here are not built for technical trails and singletrack. Fat tire electric bikes can better traverse snow, sand, mud, and some mountain bike trails-depending on trail difficulty and your own handling skills-than bikes with traditional-width tires. You’ll want to add pressure for pavement and remove air for off-road riding, as the overall decrease in tire pressure allows the tires to compress over bumps, smoothing out the ride for you.Īnother benefit of big tires and low pressures is off-road capability. Whereas you might run 60+ pounds per square inch (psi) for a road bike, 40+ psi for a hybrid, and 20+ psi for a mountain bike, fat bikes allow you to ride with as little as 5 to 10 psi in your tires. Fat bike tires take that notion to the extreme. Riding the Domane+ feels much more like you're having an amazing day on the bike, instead of a typical e-bike ride.High-volume tires allow you to run low tire pressures, and low tire pressures typically beget a more comfortable ride. Trek designed the Domane+ SLR to feel and ride similarly to a traditional, non-electric assist road bike, and I think they came exceptionally close.
This change (accompanied by a lower maximum-assisted speed of just 20mph) eliminates the AL 5 as an option for riders who want to participate in faster-paced group rides (where speeds are often above 20mph). The alloy versus carbon frame is the obvious one, but I argue the more crucial difference is that the AL 5 uses a hub-based motor instead of the mid-drive TQ motor. But, there are some key differences between the AL 5 and the significantly more premium Domane+ models. Trek can point to the Domane+ AL 5 as perhaps a more reasonably priced e-road bike model at $3,500. Hopefully, as the technology develops, Trek will offer the TQ system on more affordable bikes and models. A Pinarello Nytro E9 e-road bike with the same TQ motor will also set you back $13,000Īs a brand, Trek doesn’t generally shy away from premium-priced bikes, and in that respect, the Domane+ is priced similarly to its non-assisted version. The “value” Trek offers with the Domane+ is almost entirely in the TQ motor system, which has a unique ride experience but commands an enormous price premium. The most affordable model in the lineup-equipped with SRAM’s Rival eTap AXS and slightly heavier Bontrager carbon wheels-still retails for $9,000. Our test bike equipped with SRAM Red eTap AXS and Bontrager Aeolus RSL 37V carbon wheels sells for an eye-watering $13,000. All of these options use the same frameset, battery, and motor. Trek offers the Domane+ with the TQ motor in six different builds. For instance, at 700W, the Specialized Globe Haul ST has more than double the peak power output of the Domane+. Its TQ HPR-50 motor is far less powerful than something you find on full-power e-bikes made for commuting or cargo duties.
While no agreed-upon standard naming exists for this e-bike category, bikes like the Domane+ are often called lightweight e-bikes. Riding the Domane+ SLR is an experience much closer to that of riding a traditional road bike, except that you have a sweet tailwind where ever you go. Trek’s Domane+ SLR is not like that at all. And the motors on these bikes are designed to push as much power as fast as possible to get you to maximum regulated speeds of 20 or 28mph.
Many of these full-power e-bikes hit peak power outputs of 700w and have up to 80 Nm of torque. These bikes have large-capacity (and thus heavy) batteries paired with powerful motors. E-bikes in the commuter and mountain categories are usually termed full-power e-bikes. It’s important to distinguish between Trek’s latest, third-generation Domane+ and most other e-bikes currently on the market.
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