Wind tunnel data, a new impact protocol, and Mattia De Marchi's race feedback all landed in one wheel. Miche is finally competing at the top of gravel, and the spec sheet is not the whole story.
Miche launched the Graff RD on September 3, 2026. A €2,500 carbon gravel wheelset, developed with Mattia De Marchi and The Grip Elite Gravel team.
Weight is 1,455 grams per wheelset with tape and valves. Rim depth is 52mm, internal width 30mm hookless, and external width 38mm.
Those numbers alone would make it competitive. What actually makes it interesting is the two things underneath.
A 9.2% increase in impact energy to failure per unit weight compared to the Graff Aero 48. And carbon spokes engineered specifically for gravel's harder, more frequent impacts.
That is Miche moving from "very good gravel wheel maker" to "top-tier gravel wheel contender." At the price of a used car.
What Miche Actually Built
The Graff RD is the first Miche gravel wheel with VONOA carbon spokes. The 4x1mm cross-section carbon spokes were originally developed for the road-focused Deva RD.
For gravel, Miche re-engineered them for a different job. Road spokes get stressed hard once in a while.
Gravel spokes get stressed constantly. Every stone, every root, every washboard section transmits a small radial shock through the spoke into the rim.
Miche laced the wheels 12+12 (24 spokes per wheel) for lateral stiffness and immediate power transfer. That is the same pattern as the Graff Aero 48, retained for the same reason.
The rim itself is a full ground-up redesign. The internal width grows to 30mm hookless, sized for the 47mm to 65mm tires the current gravel meta has settled on.
The NACA airfoil profile was optimized specifically for tires wider than 47mm. That is not the assumption most aero wheels make, and it matters.
The Wind Tunnel Numbers
Miche tested the Graff RD across a -20° to +20° yaw angle sweep in 1° increments, at 30 km/h and 40 km/h, with 47mm and 50mm tires.
The weighted-average CdA improvements against the Graff Aero 48 came in as follows.
With 47mm tires: 6.92% drag reduction at 30 km/h, 5.94% at 40 km/h. That is the "sweet spot" configuration Miche designed around.
With 50mm tires: 2.73% reduction at 30 km/h, 3.92% at 40 km/h. Smaller gains, but still improvements at every tested combination.
That last point matters more than the peak numbers. A wheel that only tests well at one specific tire width and one specific speed is a dyno-queen wheel.
A wheel that improves across every tested configuration is one that will actually be faster in a race. Where tire choice and speed are constantly moving.
What €2,500 Actually Buys You
Here is where the price starts to make sense, and where it starts to hurt.
The Graff RD is positioned at the top of Miche's gravel lineup. The Graff sits at €450, the Graff Aero 48 at €1,300, and the Carbo Graff EVO at €1,500. The €2,500 Graff RD is not an incremental step. It is a full tier jump into the same conversation as the Zipp 303 XPLR SW, ENVE G Series, and Roval Terra CLX EVO.
At that price, what you are actually buying breaks down into four things.
1. The VONOA carbon spokes. First time on a Miche gravel wheel.
2. The completely redesigned rim. New NACA airfoil, 30mm hookless internal, reinforced shoulder for impact absorption.
3. The new hubs. Ergal 7075 T6 bodies with a titanium pawl carrier, micrometric bearing preload adjustment, and Miche's RES 30 Rapid Engagement System. Designed and manufactured in San Vendemiano, Italy.
4. CeramicSpeed ALPHA bearings. Silicon nitride balls hand-assembled in Denmark, claimed by CeramicSpeed to be up to 400% smoother, 128% harder, and 58% lighter than steel, with up to 5x the service life.
That is where the money goes.
Whether it is worth €1,000 more than the Carbo Graff EVO depends on what kind of racing you are actually doing.
Pictures by Miche
The Impact Formula: The Number Nobody Else Is Reporting
Every outlet covering the Graff RD launch has cited the drag numbers. Almost nobody has cited the impact number.
Miche developed something they call The Impact Formula.
It is a validation protocol where each wheel is subjected to a sequence of impacts at every spoke hole, with progressively increasing energy until the first sign of structural damage appears.
The total energy absorbed measures the wheel's ability to dissipate impact while staying intact. Compared to the Graff Aero 48, the Graff RD absorbs 9.2% more impact energy per unit weight before failure.
That is the actual selling point buried in the whitepaper. A wheel that is 75 grams lighter than the Graff Aero 48, and 9.2% more impact-resistant.
In gravel racing, that combination is rare.
Weight and impact resistance usually trade off against each other.
If Miche's numbers hold up under independent testing, that is a genuine engineering win. Not a marketing slide.
Where Mattia De Marchi Actually Fits In
Every wheel launch these days claims "pro-tested." Most of the time, that means a photo op and a sponsor obligation.
The Graff RD project is different. De Marchi and The Grip were involved throughout development, not just at the finish.
The whitepaper is specific about this. Stiffness, impact response, dynamic behavior, and handling precision were validated at race speeds under race loads at The Traka, Unbound Gravel, The Hills, and UCI Gravel World Series events.
"Only the solutions that demonstrated both performance and reliability under real-world conditions made it into the product's final configuration," Miche wrote.
That is the tell that this was not a marketing exercise wrapped around a spec sheet. De Marchi is a serious gravel racer with results at the World Series level.
His feedback shaped the wheel. That matters more than the €2,500 sticker in explaining why this project exists.
Where It Falls Short
Nothing at this price tier is beyond criticism. A few things stand out.
USD and GBP pricing is not yet disclosed. €2,500 with VAT will likely translate to roughly $2,600 to $2,700 in the US market, but the delay is odd for a global launch.
Color options are limited. The Graff RD launches in a single Wild Lilac colorway. Some buyers will love it. Some will not.
Tire compatibility is a real constraint. The 30mm internal hookless rim is designed for 47mm to 65mm tires. If you are running 40mm race tires, you are outside the design envelope.
The hookless standard. Hookless is now standard on most premium gravel wheels, but it does restrict tire choice to hookless-certified models. Check compatibility before ordering.
And the biggest caveat. The wind tunnel data and the impact numbers are Miche's own.
Independent testing has not yet been published. The methodology looks rigorous, and the yaw sweep is genuinely comprehensive.
But manufacturer-reported numbers should always be treated as directional until confirmed. That is not a knock on Miche, it is a general rule of thumb.
Who Should Actually Buy This
Here is the honest read.
Buy the Graff RD if: you are racing gravel at UCI Gravel World Series level or seriously chasing category podiums at Unbound, Traka, SBT GRVL, or The Hills. You are running 47mm to 50mm tires as your default.
You already know how to spot a marginal aero gain and translate it into training decisions. And you can absorb €2,500 without it changing your relationship to your bike.
Don't buy the Graff RD if: you are a strong recreational rider who races occasionally. The Carbo Graff EVO at €1,500 gets you 80% of the wheel for 60% of the price.
Or if you are running 40mm to 42mm tires most of the time. The Graff RD's aero advantage collapses outside its design tire range.
Or if you already own a competitive high-end gravel wheelset. The delta from a Zipp 303 Firecrest or an ENVE G23 to the Graff RD is not going to change your race results.
The gravel wheel market has stratified fast. There is now a genuine tier system with real performance separation between €500, €1,500, and €2,500-plus.
The Graff RD is Miche's play at the top of that stack. On the specs and the whitepaper data, it belongs there.
The Statement Miche Just Made
Miche has been building high-quality wheels for decades. What they have not always been is a top-tier innovator in the highest-margin category.
The Graff RD changes that. Carbon spokes designed for gravel impacts, a new impact protocol with published data, and a rim geometry built specifically for 47mm-plus tires.
That is the profile of a company competing for serious gravel racers' money. Not just catalog space.
At €2,500 they are asking to be evaluated against Zipp, ENVE, and Roval. The whitepaper is Miche's argument that they deserve that comparison.
Independent testing over the coming months will decide whether the argument holds. But the argument is now on the table.
That is a genuine shift in the gravel wheel market.
