Bike Rims for MTB, Road & Gravel – Your Guide to More Performance
Whether trail, asphalt, or gravel – the right rim makes all the difference. For mountain bikes, stability is key; for road bikes, every gram counts; and for gravel bikes, the perfect balance of both is essential. At R2BIKE, you’ll find rims in aluminum and carbon, tailored to your riding style and needs. Here’s what you need to know – from internal width to material and spoke count.
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Handpicked Products
- MSRP: 400,00 €
Why the Rim Determines Your Riding Experience
The rim is the crucial link between tire, spokes, and hub – and thus decisive for stability, comfort, and performance. A well-chosen rim provides:
- More grip (thanks to optimal tire support)
- Better acceleration (lower weight, higher stiffness)
- Longer durability (robust materials, thoughtful construction)
But which rim is right for you? That depends on your riding discipline.
Rims by Discipline – What Suits You?
MTB Rims: Stability for Trail, Enduro & Downhill
For mountain biking, control, grip, and durability are everything. Your rim must withstand hard impacts and optimally support wide tires.
- Internal Width: 25–40 mm (ideal for 2.2"–2.6" tires)
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Material:
- Aluminum: Robust, affordable, forgiving – perfect for trail and enduro.
- Carbon: Lighter, stiffer, more aerodynamic – ideal for XC and racing.
- Sizes: 27.5" (agile) or 29" (smooth-rolling, more grip)
- Spoke Holes: 28–36 spokes for maximum stability (especially for e-MTBs or heavy riders).
Tip: Asymmetric rim profiles distribute spoke tension more evenly – extending the rim’s lifespan!
Why Wider? A 30 mm internal width optimally shapes your 2.4" tire: more contact area, less burping risk, and better cornering.
Road Rims: Light, Fast, Aerodynamic
On a road bike, every gram and watt saved counts. Your rim should accelerate like a pro sprinter and remain stable through fast corners.
- Internal Width: 20–25 mm (for 25–32 mm tires)
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Material:
- Carbon: High-profile (40–60 mm) for aerodynamics, stiffness, and low weight – perfect for racing and flat routes.
- Aluminum: More affordable, durable – ideal for training and everyday use.
- Size: 28" (700C) – standard for road racers.
- Spoke Holes: 20–24 spokes (less weight, more speed).
Tip: Hookless rims save weight and improve aerodynamics – but note: Only use with compatible tubeless tires!
Gravel Rims: Versatility for Asphalt & Off-Road
Gravel riding means variety – today gravel, tomorrow asphalt. Your rim must be flexible, stable, and comfortable.
- Internal Width: 21–32 mm (for 35–55 mm tires)
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Material:
- Aluminum: Robust, affordable, ideal for mixed terrain.
- Carbon: Lighter, more aerodynamic – perfect for long distances and racing.
- Sizes: 27.5" (more agile) or 28" (smoother ride)
- Spoke Holes: 24–32 spokes (balance of weight and stability).
Tip: Tubeless-ready rims reduce puncture risk and improve rolling resistance – ideal for long tours!
Why Gravel-Specific? A 25 mm internal width optimally supports your 40 mm tire: more comfort on gravel, more speed on asphalt.
Rim Buying Guide: What to Look For
1. Does the Rim Fit Your Bike?
- Wheel Size: Check if your frame supports 26", 27.5", 28", or 29".
- Brake Standard: Disc brake (no brake track needed) or rim brake (reinforced track required).
- Tire Clearance: Does your frame have enough space for wide tires? (E.g., 2.6" on MTB or 45 mm on gravel bike).
2. Which Material? Aluminum or Carbon?
Aluminium:- heavier
- more affordable
- Bends on impact
- Trail, Enduro, everyday
- Extremely light
- More expensive
- Can break on hard impacts
- Racing, XC, Performance
3. Tubeless, Hookless, or Classic?
- Tubeless-Ready: Standard for athletes – fewer punctures, better grip.
- Hookless: Lighter, more aerodynamic – but requires compatible tires!
- Classic (Clincher): Affordable, simple – ideal for everyday bikes.
4. Do You Need Eyelets?
Eyelets (small metal rings around the spoke holes) distribute tension more evenly – recommended for:
- Heavy riders (> 90 kg)
- Tours with luggage
- Extreme loads (e.g., downhill)
Modern rims often do without eyelets – nipple washers help here.
Your Rim Upgrade at R2BIKE – Why You’re in the Right Place
- Expert Advice: Our team helps you with internal width, spoke count & compatibility.
- Fast Delivery: Your wheel project starts without delay.
- Everything in One Place: We offer not just rims, but also hubs, spokes & nipples for your custom build.
Need help? Our service team is happy to advise you – so every detail fits perfectly! Feel free to use our custom wheel building service and get your dream wheelset built to perfection.
Bike Rims – The Foundation of Every Wheel
The rim is more than just a ring of aluminum or carbon. It determines which tires you can use, how stable and precise your wheel rolls, and whether your setup transfers the power you put in effectively to the ground. Whether you want to build your wheel completely yourself, replace a worn rim, or save weight with your next upgrade – choosing the right rim is the crucial first step. At R2BIKE, you’ll find rims for MTB, road, and gravel: in aluminum and carbon, in all standard sizes, widths, and profiles – and with the expert advice you need for the details.
Rims by Discipline
The requirements vary greatly depending on the discipline – and this directly affects material, internal width, profile, and spoke count.
Road Rims
On a road bike, weight and aerodynamics are key. Rims with 28" (ETRTO 622 mm) and internal widths of 19–25 mm are now standard, matching tire widths of 25–32 mm. High-profile rims from 40 mm save measurable watts on fast flat routes, while shallow rims excel in climbing. Carbon dominates here, as it optimally combines stiffness, low weight, and aerodynamic shaping. Aluminum remains a solid choice for training and everyday use – robust, maintainable, and significantly cheaper.
MTB Rims
Off-road, the rim must endure a lot. 29" is now the most common standard for MTBs, while 27.5" is preferred for smaller riders or mullet setups (29" front, 27.5" rear). The internal width is typically 30 mm or more to optimally support voluminous tires from 2.35" and allow them to reach their full grip potential. Asymmetric rim profiles ensure more even spoke tension and thus greater durability. Aluminum is the first choice for trail and enduro, as it forgives impacts. Carbon is used in XC and performance areas when maximum stiffness and low weight are paramount.
Gravel Rims
Gravel bikes thrive on versatility, and the same goes for the rim. 28" is as common as 27.5", with internal widths of 25–32 mm giving you the flexibility to run everything from narrow slicks to 50 mm tires for gravel. Carbon profiles of medium height (35–50 mm) save energy on asphalt and remain stable off-road. Aluminum impresses with its robustness on varied terrain – ideal for long adventures where the rim has to endure a lot.
What to Consider When Buying Rims
Rim Size
The size of your rim is primarily determined by your frame and fork. The current MTB standard is 29" (622 mm ETRTO), which shares the same ETRTO diameter as road and gravel bikes – though there it’s called 28" or 700C. 27.5" (584 mm) is common in enduro/DH and as 650B on gravel bikes. Older MTBs still run on 26".
Rim Material: Aluminum or Carbon?
Aluminum rims are cheaper, more robust, and better at handling hard impacts – they bend rather than break. The first choice for trail, enduro, and everyday use. Carbon rims are lighter and stiffer, offer aerodynamic advantages, and are particularly suitable for racing, XC, and weight-optimized setups. The higher price is justified where every gram and watt counts.
Internal Width: The Right Inner Width for Your Tires
The internal width determines which tire sizes fit optimally and how the tire builds up in cross-section. On road bikes, 19–25 mm is common; on gravel bikes, 21–32 mm; and on MTBs, 30 mm and above. A rim that’s too narrow causes the tire to build up round and high, costing grip and riding stability. A rim that’s too wide can overstretch the tire’s sidewall. The ETRTO recommendations from the rim manufacturer provide reliable guidance.
Spoke Holes
The number of spoke holes must match your chosen hub. More spokes mean more stability and lateral stiffness – but also more weight. Road bikes often have 20–24 holes, MTBs typically 28–32. For heavy loads or gravity disciplines, 36 spoke holes are recommended.
Brake Standard
Disc brake rims don’t need a brake track, allowing for lighter and more aerodynamic profiles – now the standard for MTB, road, and gravel bikes. Rim brake rims have a reinforced, heat-resistant brake track. Carbon rims for rim brakes require a special coating and compatible brake pads. Disc and rim brake rims are not interchangeable.
Tubeless, Hookless & Co.
Tubeless ready is now the sporty standard and by far the best choice for anyone wanting lower pressures, better traction, and fewer punctures. Hookless rims – with straight inner walls instead of hooks – enable even lighter and more aerodynamic designs, but require compatible tires and have limited maximum pressure. Classic clincher rims are cheaper and mainly used on everyday bikes. Tubular rims are now almost exclusively found in pro road racing and CX.
Bike Rims at R2BIKE – Selection and Advice
At R2BIKE, you’ll find rims from DT Swiss, Duke, Newmen, ENVE, Light Bicycle, and other manufacturers – for every discipline, every budget, and every preference in material and profile. If you want to build your wheel completely yourself, you’ll find everything you need in one place: rims, hubs, and spokes in the right combination. And if you’re unsure about internal width, spoke count, or tubeless compatibility, our team will help you with real-world expertise – by phone, email, or directly in the shop.
By the way: If you’re looking for more than just a rim, but a complete wheelset, check out our custom wheel building service. We’ll hand-build your dream wheelset – tailored to your bike, riding style, and weight.