Fast, durable and designed for wide tyres, the Spin Industries DM845 Super Fat Boys feature a 45mm deep and 28mm wide carbon fibre rim that is ideal for road and adventure bikes. At just under a grand, they represent good value too, and the wheels can be customised to suit different rider requirements.
Built in the UK, the DM845s are designed and ideal for road tyres that are 25mm or wider, and that rim width makes them a good base for wider gravel tyres too; I tested them with 32 and 36mm gravel tyres during the time I had the wheels in for review.
The rim measures 28mm wide externally and 20mm internally, which compares well to the most progressive rim designs in the marketplace at the moment. Spin uses a full carbon fibre rim, with a clincher design and tubeless compatibility. These disc brake wheels use the same rims as the rim brake versions – you can see the telltale brake track – Spin hasn't taken the opportunity to develop a disc brake specific rim. That didn't impact the performance of the rims when riding, but it does slightly spoil the aesthetics on a disc brake bike because the decals don't go right to the rim's edge.
The hubs and rims are laced together via stainless steel spokes with Sapim Polyax alloy nipples; 20 radial laced spokes in the front wheel and 24 laced 2-cross in the rear wheel. Spin can customise the spoke count, and builds wheels to suit three different rider weights: 70, 90 and 110kg. As well as increasing spoke count for heavier riders (up to 28), Spin will alter the spoke type and lacing pattern to provide the desired wheel stiffness. Spin even uses two different rear hubs, one with asymmetric flanges for lighter riders and one with symmetric flanges for heavier riders.
At the centre of the wheels are the company's own SPN Precision hubs, with aluminium hub shells with Centrelock disc rotor attachment and a Shimano/SRAM-compatible freehub. I've used Spin's own hubs on previous wheelsets I've tested and never had any issues, and there were no problems with this wheelset during my time testing.
The hubs have replaceable end caps, as is increasingly the norm with disc brake wheelsets, meaning you can easily specify the wheels to any axle standard you might be using. I used them with a 142x12mm and 15x100mm setup. The only thing I will add is that you have to be careful you don't lose an end cap when installing and removing wheels, as they're not fixed very firmly into the hubs.
Ride and performance
I tested the wheels on an endurance road bike with 28mm tyres where they felt right at home, providing good aerodynamic efficiency at high speeds. The 45mm-deep rim has the rounded shape that is now a familiar sight on carbon fibre wheel. Stability in the wind was good with great balance on the descents and when dealing with strong crosswinds.
Swapped over to an adventure bike with gravel tyres fitted, the wheels shrugged off all the abuse I could point their way. While it's more difficult to detect flex with wide gravel tyres at lower pressures, I was able to feel some flex through the front wheel during heavy braking or diving into rough and fast corners. It was less of an issue on the road, so if I was buying these wheels purposely for off-road use I would probably specify a higher spoke count.
As they have tubeless-compatible rims, I took the opportunity to ditch the inner tubes. The tubeless-ready tyres popped up and sealed immediately with just a track pump required, no need for any dedicated tubeless pumps or air chambers. Spin doesn't supply tubeless tape and valves, so you'll have to factor the cost of those in if you're buying the wheels.
At 1,580g the wheels are a good weight for a deep-section, wide-profile carbon rim, and climbing performance was good with no visible lag when tackling steep gradients.
There's a growing choice of reasonably affordable carbon wheels, with £1,000 becoming a popular price point. These DM845s sit alongside some really good wheels, and make you wonder why you'd want to spend more.
Prime's RR-28 carbon clincher wheels don't have an on-trend wide rim profile, but that aside, the performance with a road tyre is good and at £625 they're extraordinarily cheap.
If it's a dedicated off-road gravel and adventure wheelset you're after then Hunt's new 30Carbon Gravel Disc wheels, with the 10/10 review and £999 price tag, are definitely worth a closer look, though they don't offer the aerodynamics of the Spin wheels.
And if you're prepared to ignore the attraction of carbon and aerodynamics, the Kinesis RaceLight Disc wheels are the same weight but less than half the cost of the Spin wheels.
Fast and stable wheels at a good price, but slightly flexy for extended off-road use
road.cc test report
Make and model: Spin Industries DM845 Super Fat Boys wheelset
Size tested: 45mm deep, 28mm wide
Tell us what the wheel is for, and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?
Spin Industries says:
Conceived as the perfect mid-depth wheelset, the DM845s can be ridden fast on any course. Road, gravel, CX or down your local Velodrome. Just choose the right hub for your bike.
Incredible levels of all-weather grip, comfort and speed come with the DM8 series wheels as standard, thanks to the only rim on the market engineered specifically for 25mm tyres.
DM8s can be made for standard road bikes with QR axles and rim brakes, or for your disc-braked road, gravel, adventure or cross bike, with either 12 or 15mm thru-axles. If you're racing the boards or Red Hook crits, choose our fixed gear track build.
Tell us some more about the technical aspects of the wheel?
Weights (average, grams, road build): Front 690 / Rear 850 / Pair 1540
Rim Width, Depth (mm), Profile & Finish: 28 wide x 45 deep 3DM Toroid matt UD carbon
Hub Choice: SPN Precision forged alloy for road QR axles, / centre-lock disc / fixed gear track
Spokes Front: 20 - laced radial (road only) or 2-cross
Spokes Rear: 24 - laced 2-cross / 2-cross
Spokes Colour: Stainless steel silver / black spokes optional with additional purchase Black Spoke Pack
Nipples: Sapim Polyax alloy silver
11 Speed Drivetrain: Shimano/SRAM standard, Campag Optional, Singlespeed Fixed/Fixed (Track only)
Tubeless Compatible: Yes - with optional tubeless rim tape, sealant, valves & tyres
What's In The Box - Road Builds: Wheels - Front and Rear Pair. Plus rim tape, Dark Matter carbon ceramic brake pads, Quick Release skewers, 10/9/8 speed freehub converter
What's In The Box - Disc Builds: Wheels - Front and Rear Pair. Plus rim tape, Thru-Axle adapators, 10/9/8 speed freehub converter
What's In The Box - Track Builds: Wheels - Front and Rear Pair. Plus rim tape, Track nuts
Nicely constructed wheels with good finish and attention to detail.
Good stiffness and aero performance on the road bike, but flex detected when used on a gravel bike.
They're the sort of weight we'd expect for a carbon wheel with this wide profile rim.
In the increasingly crowded £1,000 carbon wheel market, the customisation offered by Spin gives them an edge, but the lack of a disc brake-specific rim leaves them looking a little dated.
Did the wheels stay true? Any issues with spoke tension?
No problems throughout the test period.
How easy did you find it to fit tyres?
I fitted tubeless tyres with ease.
How did the wheel extras (eg skewers and rim tape) perform?
Replaceable end caps make it easy to fit to any disc brake bike.
Tell us how the wheel performed overall when used for its designed purpose
Good aero performance and nicely stable in crosswinds, and fast in a straight line. Some flex when pushed hard off-road on a gravel bike.
Tell us what you particularly liked about the wheel
Easy to install and fit tubeless tyres; good aero performance.
Tell us what you particularly disliked about the wheel
The redundant brake track looks out of place on a disc brake road bike.
Did you enjoy using the wheel? Yes
Would you consider buying the wheel? Maybe
Would you recommend the wheel to a friend? Maybe
Use this box to explain your score
There's a growing choice of sub-£1,000 carbon fibre wheels and with good performance and a custom build option the Spin wheels have a lot going for them, but lack stiffness for gravel and adventure riding.
About the tester
I usually ride: My best bike is:
I've been riding for: 10-20 years I ride: Every day I would class myself as: Expert
I regularly do the following types of riding: road racing, time trialling, cyclo-cross, commuting, touring, mountain biking
David has worked on the road.cc tech team since July 2012. Previously he was editor of Bikemagic.com and before that staff writer at RCUK. He's a seasoned cyclist of all disciplines, from road to mountain biking, touring to cyclo-cross, he only wishes he had time to ride them all. He's mildly competitive, though he'll never admit it, and is a frequent road racer but is too lazy to do really well. He currently resides in the Cotswolds.