The BMC Roadmachine 02 looks and rides just like their pro-level Roadmachine 01 by design. The frameset comes out of the same molds used to create the Roadmachine 01. The main difference is the grade of carbon used. Lower modulus carbon isn’t as stiff, so more of it is used. The result is a little added weight for a greatly-reduced cost. The second difference is that the Roadmachine 02 allows you to use a conventional stem. A bit less integration but far greater choice and flexibility in positioning. The bikes have been updated with new color schemes and new components, particularly, updated Shimano Ultegra R8020 Di2 and R8000 mechanical groups. They also have added a flat bar option that goes a bit farther toward off-roading and even nudging into the commuting and touring realms.
The trend in endurance bikes is to open up the road. With a bike that’s more stable and allows for wider tires it’s easier to ride cobbles, gravel, dirt. You no longer have to look at an enticing, but rough road and wish that were it not for your back, you’d be riding there. Now you can.
BMC also solved a problem with endurance bikes. That they can feel slow. With shorter chainstays and greater lateral stiffness at the bottom bracket and head tube, the bike accelerates better. With a swappable upper headset cone, 2cm is standard--and you can get a 0cm one--you can easily switch between the stack of an endurance bike with that of a race bike. The bike is still stable thanks to 71mm of bottom bracket drop and 63mm of trail.
As with any endurance bike, comfort and stiffness need to be baked in. Both layup and shaping play important roles. All part of BMC’s TCC, Tuned Compliance Concept. That’s why there’s the beefy 1 ½” lower end of the tapered steerer and beefy fork crown atop slim fork legs. Likewise, at the back, the angle compliance seat stays attach low on the seat tube. The shaping here results in vertical compliance that is greater than the Teammachine but less than the Gran Fondo. The D-shaped seatpost, designed specifically for the Roadmachine, is carbon, and engineered for compliance as well. 15mm setback, btw.
In terms of both bottom bracket stiffness and head tube stiffness, the Roadmachine sits between both bikes as well, stiffer than the GF and not as stiff as the Teammachine. You can see the work with the elongated head tube, the notch for the fork, and the massive bottom bracket juncture as well as chainstays that start off beefy and slim down, similar to the design of the fork blades. The BB standard is PF86, and atop it sits an integrated chain guide, designed to eliminate dropped chains.
Since BMC wants you to have options, they equip the bike with disc brakes, allowing for tires up to 30mm in diameter to be fitted. There are also hidden fender mounts, which, if utilized, protect you from road splash and gunk, but limit tire width to 28mm. The brake mounts a proprietary mount in front, direct in rear. 160 or 140mm rotors can be used up front. With the direct mount, you can use a 140mm, but with an adapter, move it on out to 160mm. The wheels roll on 12mm thru-axles, both front (100mm) and rear (142mm). The thru-axle design improves stiffness, drops weight, and makes wheel changes easier.
As with all of their internally-routed cable systems, this is DTI, Dual Transmission Integration. You run hydraulic brakes, but have the option of mechanical or electronic, with stops and plugs easily pulled and swapped.