Aluminum Running Boards Explained: Weight, Durability and Corrosion Resistance Compared

This article is part of our Running Boards Guide.

Aluminum running boards are popular for trucks, SUVs, and crossovers because they add a clean look, improve cabin access, and usually weigh less than many steel alternatives. For DIY owners, that lower weight can make installation easier and reduce concerns about adding unnecessary mass to the vehicle.

But weight is only one part of the buying decision. You also need to know how aluminum holds up under daily use, how well it resists corrosion in wet or salty conditions, and whether it offers enough strength for your passengers, gear, and driving habits. The right answer depends on climate, vehicle use, and the quality of the board itself.

This guide breaks down what aluminum running boards do well, where they have limits, and how they compare in the real world so you can buy with confidence.

Why Aluminum Running Boards Are so Common

Aluminum is widely used in aftermarket side steps because it balances low weight, good strength, and strong corrosion resistance. Manufacturers can extrude or stamp aluminum into broad step surfaces, pair it with textured pads for traction, and finish it in polished, brushed, anodized, or powder-coated styles.

For many drivers, aluminum running boards hit a useful middle ground. They are typically lighter than traditional steel boards, but they still feel sturdy enough for everyday entry and exit. That makes them especially attractive for family vehicles, daily-driven pickups, and SUVs that see mixed city and highway use.

• Lighter overall weight than many steel designs
• Good resistance to rust in rain, snow, and humid climates
• Modern appearance that works on stock or upgraded vehicles
• Easier handling during DIY installation
• Wide availability in factory-style and off-road-inspired designs

Weight Advantages of Aluminum Running Boards

Lower Weight Makes Installation and Daily Use Easier

One of the biggest reasons buyers choose aluminum is simple: it weighs less. Exact numbers vary by board length, width, brackets, and tread design, but aluminum boards generally reduce the amount of weight added along the sides of the vehicle compared with heavier steel options.

That matters in two practical ways. First, lighter boards are easier for one or two DIY installers to lift, align, and bolt into place. Second, less added weight can be helpful if you already carry passengers, tools, recovery gear, or cargo on a regular basis.

What Lower Weight Does and Does Not Change

Do not expect aluminum running boards to create a dramatic fuel-economy improvement on their own. The difference is usually too small to notice in daily driving. However, lower-weight accessories still make sense when you want to keep your build practical and avoid stacking unnecessary pounds on the vehicle.

• Helpful for owners who install parts at home
• Useful on family SUVs where easy entry matters more than rock-crawling strength
• A smart choice if you want a full-length board without the extra heft of thick steel
• Less cumbersome to remove later for service, upgrades, or cleaning

How Durable Are Aluminum Running Boards?

Durable Enough for Normal Truck and SUV Use

Aluminum running boards are generally very durable for daily entry, family use, work commuting, and light recreational driving. A quality set with solid mounting brackets and reinforced construction can easily handle normal stepping loads for years.

The key point is that durability depends on the whole assembly, not just the board material. The board itself may be aluminum, but the strength you feel underfoot also comes from bracket thickness, attachment points, hardware quality, and the design of the internal supports.

Where Aluminum Has Limits

Aluminum is not always the best choice for every kind of abuse. If your vehicle regularly contacts rocks, stumps, deep ruts, or jobsite obstacles, a heavy-duty steel step or true rock slider can be the better solution. Aluminum boards can dent, gouge, or deform if they take hard side impacts that go beyond normal stepping use.

That does not mean aluminum is weak. It means it is best matched to buyers who need a stable step and exterior protection from road grime, not maximum trail armor.

• Best for commuting, family use, highway driving, and moderate weather exposure
• Good for work trucks that need easy cab access but not constant side-impact abuse
• Less ideal than heavy steel for extreme off-road use
• More resistant to rust than plain steel, but still vulnerable to dents and scrapes

Corrosion Resistance: One of Aluminum’s Biggest Strengths

Why Aluminum Resists Rust Better than Steel

When exposed to air, aluminum forms a thin oxide layer that helps protect the metal underneath. Unlike untreated steel, it does not rust in the same way. That makes aluminum running boards especially appealing in regions with rain, coastal humidity, winter road salt, or repeated wash-and-dry cycles.

For many owners, corrosion resistance is the feature that justifies the purchase. A quality aluminum board with a durable finish can stay attractive longer and require less worry than a lower-cost steel board with chipped paint.

Corrosion Resistance Is Good, but Maintenance Still Matters

Aluminum is corrosion resistant, not corrosion proof. Salt, road chemicals, mud buildup, and neglected mounting hardware can still create problems over time. Brackets may be steel, hardware may be coated steel, and dissimilar metals can sometimes contribute to galvanic corrosion if moisture gets trapped.

• Rinse boards regularly in winter or coastal areas
• Clean packed mud and salt from brackets and mounting points
• Inspect finish damage, especially on the underside
• Use correct hardware and anti-corrosion practices during installation
• Touch up or protect exposed areas if the finish gets scratched

Aluminum Vs Steel Running Boards

Most buyers end up choosing between aluminum and steel. Neither is automatically better. The right material depends on how you use the vehicle and what tradeoffs matter most.

Choose Aluminum if You Want

• Lower weight and easier handling during installation
• Strong resistance to rust in snowy, wet, or coastal climates
• A cleaner factory-style or modern appearance
• A practical step for everyday use rather than maximum impact resistance

Choose Steel if You Want

• Higher resistance to hard impacts and rough off-road contact
• A heavier-duty feel for work or trail-focused builds
• Maximum ruggedness over minimum weight
• The option to step up into true slider-style protection on some vehicles

If your vehicle is mainly a daily driver, family hauler, or road-trip SUV, aluminum often makes more sense. If it is a dedicated off-road truck or regularly gets dragged across obstacles, steel may be worth the extra weight and rust-management effort.

What to Look for Before You Buy

Board Design Matters as Much as Material

Two aluminum running boards can perform very differently. One may be rigid, wide, and confidence-inspiring. Another may flex more than you expect. Look beyond the word aluminum and compare the full design.

• Step width for kids, older passengers, and work boots
• Traction pads or textured tread for wet weather grip
• Vehicle-specific brackets instead of universal-fit compromises
• Weight capacity ratings from a reputable manufacturer
• Finish type, such as anodized or powder-coated surfaces
• Coverage length, including cab-length or wheel-to-wheel options
• Hardware quality and corrosion-resistant fasteners

Check the Climate and Use Case

If you live in the Rust Belt, near the ocean, or anywhere roads are heavily salted, aluminum should be high on your list. If you frequently enter muddy jobsites or off-road areas, focus on drainage, tread grip, and bracket strength. If children or older adults use the vehicle, prioritize a wide, stable step surface over appearance alone.

Installation and Long-term Ownership Tips

Most aluminum running boards are straightforward for DIY installation because the boards are manageable to lift and position. Still, the cleanest results come from taking your time. Test-fit brackets first, confirm bolt alignment, and torque hardware to spec instead of overtightening.

After installation, check the boards again after the first few drives. Hardware can settle slightly, especially if the brackets use multiple attachment points. A quick re-torque and inspection can prevent noise, flex, or uneven loading later.

• Wash beneath the boards, not just the visible step surface
• Inspect steel brackets for coating damage or early rust
• Tighten loose hardware before it enlarges mounting holes
• Replace worn traction pads if they become slick
• Avoid using harsh abrasive cleaners on finished aluminum surfaces

Bottom Line: Are Aluminum Running Boards Worth It?

For many drivers, yes. Aluminum running boards are a smart buy when you want low weight, dependable everyday durability, and excellent corrosion resistance. They are especially well suited to daily-driven trucks and SUVs that need convenient access and a clean finished look without the maintenance concerns of rust-prone steel.

The main caution is to match the board to the job. If your vehicle sees mostly pavement, weather exposure, and normal family or work use, aluminum is often the best balance. If you need side protection against serious off-road impacts, step up to a heavier-duty steel design instead.

Related Buying Guides

Check out the Running Boards Buying Guides

FAQ

Are Aluminum Running Boards Strong Enough for Heavy Adults?

Yes, quality aluminum running boards are usually strong enough for normal passenger use, including heavier adults. Always check the manufacturer’s weight rating and bracket design, because overall strength depends on the full system, not just the aluminum board.

Do Aluminum Running Boards Rust?

Aluminum does not rust like steel, which is one of its biggest advantages. However, it can still corrode under harsh conditions, and steel brackets or hardware may rust if they are poorly coated or not maintained.

Are Aluminum Running Boards Better than Steel?

They are better for some buyers, especially those who want lighter weight and better corrosion resistance. Steel is often better for extreme off-road use or situations where hard impacts are more likely.

How Long Do Aluminum Running Boards Last?

A well-made set can last for many years with normal use and routine cleaning. Lifespan depends on climate, finish quality, hardware condition, and how much abuse the boards take from debris, salt, or off-road contact.

Are Aluminum Running Boards Slippery when Wet?

They can be if the surface is smooth. Look for boards with textured tread, raised grip patterns, or rubber step pads for safer footing in rain, snow, or mud.

Can I Install Aluminum Running Boards Myself?

In many cases, yes. Their lower weight can make DIY installation easier than heavier steel boards. Vehicle-specific kits with clear instructions and pre-matched brackets are usually the most straightforward for home installers.

What Is the Biggest Downside of Aluminum Running Boards?

The biggest drawback is that they generally do not offer the same hard-impact toughness as heavy-duty steel steps or rock sliders. They are excellent for everyday use, but not always ideal for severe off-road abuse.