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Spiuk Aldama Carbon Road Shoes



Comfortable and reasonably stiff race shoes that are very well made – just check the sizing
Comfortable upper
Boa system gives a secure wraparound fit
UK sizing comes up a little small

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

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The Spiuk Aldama Carbon Road Shoes strike a good balance between sole stiffness and comfort, making them ideally suited for fast road riding and day-long rides. You'll need to check the sizing, though, as they come up a little small.

The Aldamas offer a comfortable fit pretty much everywhere. The synthetic upper is supple which means when you twist the Boa dial to tighten the cable, the shoe wraps itself around your foot for a close fit without any pressure points.

> Buy these online here

The open section that sits above the tongue is offset from the centre, which also reduces any pressure on the top of the foot when pulling on the pedals.

2020 Spiuk ALDAMA Carbon Road Shoe - boa.jpg

For use in hot weather there are plenty of holes in the upper, which allows some ventilation, and even in the mid-20s Celsius I've been riding in for the last few weeks my feet never felt overly warm.

I got on well with the shape of the carbon fibre sole too. There is just enough of a curve to support your arch, and no matter how hard I was riding I never suffered from any hotspots or numbness.

Like many brands, Spiuk uses a stiffness index (SI) for ordering its soles in order of rigidity – it's not like an industry standard or anything, though, so the numbers are largely irrelevant when comparing brands. The Aldamas have Spiuk's RLX3 sole with an SI of 10.2. When powering up climbs or sprinting hard I could detect a bit of flex around the cleat area, but not so much that I felt like it was really wasting power.

2020 Spiuk ALDAMA Carbon Road Shoe - sole toe.jpg

They aren't anywhere near as stiff as something like the Suplest Edge shoes or the Shimano S-Phyre RC9s. I'd say the Spiuks are about equal to the sole found on the Bontrager Ballistas.

The sole offers venting via mesh gaps, allowing air to flow through from front to back. I couldn't really feel any cooling effect from them, though, to be honest.

2020 Spiuk ALDAMA Carbon Road Shoe - heel sole.jpg

As you'd expect, the sole is drilled for any road cleat that uses a three-bolt layout and you'll also find markings for cleat alignment.

When it comes to sizing, the Aldamas are a little off. The ones here are a size 45 or UK11 (US 10 1/2) but I'd definitely say they are more like a UK10. That's what size I am, and I wouldn't want to go any smaller. The fit I had here was close both front and back, which is what you want, so that there is no movement when pedalling.

2020 Spiuk ALDAMA Carbon Road Shoe - inside.jpg

With a price of around £160 (their rrp is €179.90), the Spiuks are on the money for what you're getting, with a carbon sole and a Boa retention system. The quality is also very good with a neat finish between the sole and the upper, and all of the stitching is clean and precise throughout. The upper material resists scuffs and marks well, too.

The similarly specced FLR F-XX Strawweight shoes have slightly stiffer soles and are priced at £179.99, while the Bontrager Ballistas I mentioned earlier are also pretty much the same, although the Boa dial is placed on the heel of the shoes. Performance throughout is similar, but they'll set you back £200.

> Buyer’s Guide: 22 of the best performance road cycling shoes

However, the Van Rysel RR 900 Carbon shoes are one of the cheapest pairs with this sort of build, at just £119.99.

> Buyer’s Guide: 10 of the best cheap cycling shoes

Overall, the Aldamas are a very nice pair of shoes. Get the size right and the fit is good, and while the sole isn't the stiffest on the market it'll meet the racing aspirations of all but the most powerful riders.


Comfortable and reasonably stiff race shoes that are very well made – just check the sizing test report

Make and model: Spiuk Aldama Carbon Road Shoe

Size tested: 45

Tell us what the product is for

Spiuk says, "You'll find it hard to come across another model that so successfully combines performance, comfort and design. Its carbon fibre sole helps you to enjoy each watt you generate. Climbing, cruising or pressing a descent. Adjust the wheel of its Boa® fit system and you'll be ready for new challenges. Unstoppable. Comfortable with the renewed energy it provides. The Aldama Carbono shoe is cycling in its purest form. Beautiful."

Tell us some more about the technical aspects of the product?

Spiuk lists these features:

Very lightweight cycling shoes with Boa® Fit System

Designed for top-level road racing

RLX3® carbon fibre sole, with air vents for direct ventilation

Boa® Fit System millimetric adjustment wheel

Asymmetrical opening for a better distributed fit

Sizes: 38 to 47

Colours: White, black, green, yellow

Rate the product for quality of construction:
Rate the product for performance:
Rate the product for durability:
Rate the product for fit:
Rate the product for sizing:

I'd say they come out about one UK size too small. Go bigger though and you will be impressed with the fit and comfort.

Rate the product for weight:
Rate the product for comfort:
Rate the product for value:

How easy is the product to care for? How did it respond to being washed?

The upper resists scuffs and marks better than many other shoes.

Tell us how the product performed overall when used for its designed purpose

Not the stiffest out there but strike a good balance between comfort and performance.

Tell us what you particularly liked about the product

Suppleness of the upper gives a great fit.

Tell us what you particularly disliked about the product

Sizing is a little off.

How does the price compare to that of similar products in the market, including ones recently tested on

For what you are getting the Aldamas are in the right ball park when compared to the likes of the FLRs mentioned in the review. There are cheaper options, though, like Van Rysel's.

Did you enjoy using the product? Yes

Would you consider buying the product? Yes

Would you recommend the product to a friend? Yes

Use this box to explain your overall score

Apart from them coming up a little small in size, the Spiuks perform very well. They are of a very good quality and I'm most impressed with the shape and suppleness of the upper.

Overall rating: 8/10

About the tester

Age: 41  Height: 180cm  Weight: 76kg

I usually ride: This month's test bike  My best bike is: B'Twin Ultra CF draped in the latest bling test components

I've been riding for: Over 20 years  I ride: Every day  I would class myself as: Expert

I regularly do the following types of riding: time trialling, commuting, club rides, sportives, fixed/singlespeed,

As part of the tech team here at F-At Digital, senior product reviewer Stu spends the majority of his time writing in-depth reviews for, and ebiketips using the knowledge gained from testing over 1,500 pieces of kit (plus 100's of bikes) since starting out as a freelancer back in 2009. After first throwing his leg over a race bike back in 2000, Stu's ridden more than 170,000 miles on road, time-trial, track, and gravel bikes, and while he's put his racing days behind him, he still likes to smash the pedals rather than take things easy. With a background in design and engineering, he has an obsession with how things are developed and manufactured, has a borderline fetish for handbuilt metal frames and finds a rim braked road bike very aesthetically pleasing!

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