Are aero bike wheels worth it? (2024)

Are aero bike wheels worth it? (1)

QUESTION: Are aero bike wheels worth it? I ride a Trek road bike that just has wheels it came with and was thinking about upgrading my bike. – Sawyer F

ANSWER: If you’re hoping to go faster with an equipment upgrade, improving your aerodynamics is one of the best ways. So if you want to make an existing bike faster, installing aero wheels can make a big difference and save you a lot of watts.

John Cobb, the guy who first started putting bikes into wind tunnels to study cycling aerodynamics back in the 1980s, says that if he had $1,000 to spend on a mid level (Ultegra or equivalent components) road bike, he’d use that money to buy faster wheels.

“Wheels are where you save watts.”For about $1,000, Cobb explains, you could get a nice pair of used carbon wheels, a Zipp for the front and a 606 for the back is what he suggests.And the savings of watts might surprise you.“When you’re putting out between 175 and 180 watts, those wheels could save you about 45 watts. And towards the end of a ride, you’ll find discover another big difference.The calories you saved by riding those wheels early in the ride are available energy for the end.”

Better wheels are always a good (albeit expensive) upgrade for a bike, whether they’re lighter more aerodynamic or both. Aero wheels look good, they sound cool when you’re riding them and they even make you feel faster.

One disadvantage to aero wheels is that they can be a little scary in a crosswind — particularly your front wheel. A sudden gust can give you big, frightening surprise or even cause a crash if you’re not ready. Deeper rim aero wheels in particular are harder to control, so you’ll sometimes see riders who use a deeper rim wheel in the back and a rim that isn’t as deep in the front.

If you’re looking to get the better aerodynamics for less money than a set of wheels, a skinsuit or an aero jersery will actually save you more watts. And an aero road helmet can also save you a significant number of watts for as low as a couple hundred bucks, so keep the aerodynamically designed models in mind when you’re shopping, since you need a helmet regardless.

And you know what’s totally free? Improving your aerodynamic position by riding in the drops with a flat back. You’ll need a good bike fit and some core strength and practice to get comfortable in the drops, but the aerodynamic payoff is big.

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Comments

  1. Are aero bike wheels worth it? (2)John says

    Aero wheels worth 45 watts on a 175-180 watt base??? From gribble.org cycling calculator that’s like saying aero wheels alone let a 20mph road rider do 22+. Gotta throw the BS flag on that one. No major aero wheel maker is claiming that kind of power savings (or speed increase) at that base wattage. I like Cobb and ride one of his saddles, but gotta believe something got lost in the translation of that 45 watt quote.

    Personally- over many 1.5hr 20mph ave training rides over same rural course on both wheel sets (same bike/helmet/conditions) my HED Jet 6’s are consistently about 0.3-0.5mph faster than my Ksyrium SSC-SL’s (my school training wheels, very NON-aero in published tests). That’s more like a 10 watt difference. Noticeable but no 10% jump in speed.

    Nerd alert- Although now a bit dated, this aero testing combining test track and wind tunnel data suggest a 10% riding speed increase at the same power by upgrading cycling equipment IS possible. But that is by changing from a standard road bike/wheels/helm to a full on time trial set-up (TT bike/aero bars, aero helm, aero (but non-disc) wheels).

    https://www.bikeradar.com/advice/fitness-and-training/how-aero-is-aero/

    Reply

    • Are aero bike wheels worth it? (3)Kerry Irons says

      Agree with this. The best aero wheels on the planet give you 0.3 mph at 20 mph, and 0.4 mph at 25 mph. That’s 3-4 minutes over 100 miles. A really significant number if you are racing but about the “dawdle time” a lot of us could make up by being better organized at the rest stops on an organized century ride. If your only goal is to ride faster, and you don’t want to put in the effort of training for it or you are already trained to your practical limit, then aero stuff is your answer. There’s a parallel to the “how to climb faster” question. Pushing away from the dinner table is the most effective (and cheapest) way. A lighter bike helps but costs a lot more.

      Reply

      • Are aero bike wheels worth it? (4)Fritz Mueller says

        As usual, Kerry Irons has it nailed. If you can’t maintain a speed of 40 kph the advantage of an aero wheel set is miniscule. If you can maintain that speed, your sponsor will pay for the wheels.

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Are aero bike wheels worth it? (2024)

FAQs

How much difference do aero bike wheels make? ›

Your bike wheels are a distinct point of drag generation. Using a more aerodynamic wheel can help reduce drag by reducing your CdA, therefore making you faster.

Is it worth getting Aero wheels? ›

Long story short, no, aero wheels are unlike to increase your average speed over 100 miles from 17.84 mph to 19 mph (6.5% increase). At those speeds, the aero drag of the wheels is less than 10% of the total drag, so any reduction in aero drag is likely to be less than 6.5%.

What is the advantage of Aero rims? ›

From cyclocross to sportives and general riding, we seemingly can't get enough of the deep, fast hoops. Aero road wheels can be the best way to buy more speed, drop weight and add stiffness to your bike. Depending on what type of riding you do, picking the right aero wheel can transform your riding experience.

How much time will Aero wheels save? ›

Lew explains that at certain yaw angles, good aero rims can use wind like a sail on a boat, creating forward thrust that opposes drag. James's average time for the three laps is 5s quicker per lap (2m 28s) than the control time – a 3.3% improvement.

How many miles do Aero wheels add? ›

The Tesla Model 3's Aero Wheel Covers Improve Efficiency Way More Than We Expected. In our testing, they proved their worth by yielding up to 10 additional miles of range. The Tesla Model 3 comes standard with aero covers that shield most of its 18-inch wheels.

What is the disadvantage of Aero road bike? ›

The disadvantage of the aggressive geometry of aerodynamic bikes is that many cyclists do not have the flexibility necessary to reach the planned position or force to maintain this position for long periods. If you are not flexible enough to adopt this low position, the aerodynamic advantages will be lost.

At what speed does aero matter on a bike? ›

At speeds over 9 mph, it's the dominant force of resistance. By the time you hit about 30 mph, 90 percent of your power goes into overcoming air resistance, or what scientists call aerodynamic drag.

How much power do Aero wheels save? ›

0.010W/£ - Aero wheels

Sure, a 15 watt saving isn't to be sniffed at by any means, it's significant and notable, but for around £1500 you could easily make up that 15 watts elsewhere and then some.

How much faster does an aero bike make you? ›

An out-and-out aero bike could save you up to around 4.5 seconds per mile, which could make those PRs and Strava segments much easier to smash!

At what speed do aero wheels help? ›

If you regularly average about 20mph/32kph and faster on your rides, aerodynamics matters a lot and can save you minutes on a 50 mile/80K ride based on how you position yourself on your bike and what gear (wheels, frame, tires) and kit (helmet, jersey, etc.) you use.

How efficient are Aero wheels? ›

This unconventional design makes the aero wheels about 10% more efficient than conventional Tesla wheels. More specifically, aero wheels reduce drag and increases efficiency (as in miles per gallon equivalent, or MPGe). Aero wheels come with every Tesla Model 3 free of charge.

Are Aero wheels DOT approved? ›

The 15×7 wheels are stamped DOT approved for off-highway use. The 15×8 can be ordered with an IMCA sticker. AERO Race Wheels are not street legal.

How much faster is a cycling skinsuit? ›

How much faster are you in a skinsuit? This point has been investigated many times, and Cycling Weekly has tested it in practice. It turns out that a time trial suit can make you cycle about 21 seconds faster over a distance of 40 kilometers at a speed of 40 kilometers per hour.

How much faster is a TT helmet? ›

Wind-tunnel testing by 220Triathlon have shown that, all things being equal, an aero helmet with its smooth front and long rear tail will shave an average of a minute off a 40km/25mi ride versus a more conventional road helmet.

How much time does a TT helmet save? ›

Aero helmets typically save 30-60 seconds for every hour of riding. The actual time saved for a triathlete depends on how well the helmet smooths the airflow from the helmet to the middle of the back. This time can be broken down by race distance as: Sprint triathlons – 15-30 seconds.

At what speed do aero bikes make a difference? ›

"The testing we did actually showed that the enthusiast level at 22mph actually performed better than the pro at 30mph." So yes, even if you're not a speed freak, aerodynamics do play a role at amateur-level speeds. According to Ribble's data, it's us that could benefit most from an aero bike.

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