Efficiency is the name of the game when it comes to aero road bikes — or, to put it another way, going faster for less effort.
The key to achieving this is a frame that uses carefully shaped tubes to allow the air to pass over them more easily. This can be done in a variety of ways from simply giving the tubes a teardrop profile or, in the case of the more advanced models, manipulating the airflow over high-drag areas in such a way so as to create a net reduction in drag for the bike as a whole.
Most aero road bikes look fat from the side, but slim from the front.
Aero bikes started to appear after some bright spark wondered if it might be possible to combine the efficiency of a time trial bike with the handling of a road bike. It turned out it was, although early examples of aero bikes were compromised in terms of their stiffness and steering. A lot of subsequent refinement has since improved those characteristics, but it’s taken an awful lot of development work. All of which costs the manufacturers money which needs to be recouped, hence aero bikes are often at the more expensive end of the price spectrum. (There’s also the ‘this is what the pros use’ aspect that adds a premium.)
Price is one thing that might dissuade you from investing in one, but if you ride for fun and fitness rather than racing there are other things that might put you off.
For a start, the extra material required to create those fancy tube shapes often means aero bikes have a slight weight penalty over bikes with slimmer tubes. As such they’re not necessarily the best machines to take into the mountains. Then there’s all the faff that comes with internal cable routing, integrated brakes and increasingly integrated bars, stems and seatposts, which means aero bikes often cause headaches when it comes to adjusting and maintaining them.
Specialized S-Works Venge ViAS
- Price: £9,000 / $US11,000 / AU$14,407
- Stock Quarq power meter spider
- Faster than the Tarmac
- Nimble handling and almost telepathic acceleration
Trek Madone 9 Series
- Price: £9,750 / US$13,650 / AU$16,000
- Cuts fast through the wind but without beating you up along the way
- Fantastic handling
- Still impressively light
Canyon Aeroad CF SLX eTap
- Price: £6,700 / US$ NA / AU$12,000
- Slick yet straightforward design
- Sram eTap groupset means no wires to worry about
- Zipp wheels are swift and stable
Scott Foil Team Issue
- Price: £5,999 / $8,000 / AU$9,200
- Takes off like a scalded cat
- Great bar shape helps you hold a low-profile position
- Zipp wheels with Continental tyres make a great pairing
De Rosa SK Pininfarina
- Price: £7,450 / US$TBC / AU$TBC
- Awesome looks paired to an awesome spec
- Fast without compromising on comfort
- Italian pedigree and prestige
BMC TMR01 Ultegra Di2
- Price: £4,000 / $6,999 / AU$TBC
- Integrated aero brakes that provide powerful and consistent speed control
- Precise handling with rich road feedback
- Neat internal cable routing and dedicated battery compartment for electronic groupsets
Trek Madone 9.2
- Price: £4,500 / US$5,999 / AU$6,999
- Has the performance to match its looks
- An aero-optimised machine with all-day ride comfort
- Broad 25mm tyres add to the frame’s bump-absorbing ability
Argon 18 Nitrogen Pro
- Price: £5,500 / US$TBC / AU$TBC
- A high-performance aero machine
- Adjustable front end adds height without the need for spacers
- A purposefully firm ride
Storck Aerfast Pro
- Price: £5,499 / US$TBC / AU$TBC
- Packed with good-looking and practical features
- Lively and agile
- Aero performance matched to all-day ride comfort
Lapierre Aircode SL 600 FDJ CP
- Price: £2,300 / $3,599 / AU$TBC
- Sharp looks to match its sharp handling
- An impressive spec package for the price
- Rock-solid frame that still manages to blunt the worst of the bumps
Giant Propel Advanced Pro 0
- Price: £3,999 / US$5,650 / AU$5,799
- Striking looks and scorching speed
- Integrated aero brakes with practical touches
- Inexhaustible eagerness to accelerate
Boardman AiR 9.4 Di1
- Price: £4,000 / US$TBC / AU$TBC
- Carbon aero wheels help the bike hold speed
- Ultegra Di2 groupset
- Clearance for 25mm tyres in the smoothly sculpted frame
Rose X-Lite CWX 8800
- Price: £4,310 / US$TBC / AU$TBC
- Aero bike with disc brakes
- A fine cockpit, despite a fiddly stem
- Classy wheels and groupset
You can read more at BikeRadar.com
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