Why are Wheel spacers made from 7075-T6 aluminum better than ones made from 6061-T6 aluminum.

When choosing wheel spacers, the material they’re made from plays a huge role in their performance, durability, and reliability. If you're debating between 7075-T6 aluminum and 6061-T6 aluminum, let’s break it down and show why aircraft grade 7075-T6 forged aluminum is the better option. Spoiler alert: it’s all about strength, weight, and longevity.

Strength and Durability: 7075-T6 Takes the Lead

One of the biggest advantages of 7075-T6 aluminum is its exceptional strength. To give you some numbers, the tensile strength of 7075-T6 can reach up to 83,000 psi, with a yield strength of 73,000 psi. Compare this to 6061-T6 aluminum, which offers a tensile strength of around 45,000 psi and a yield strength of 40,000 psi.

This means 7075-T6 aluminum is about 84% stronger in tensile strength and 83% stronger in yield strength than 6061-T6. For wheel spacers, which are subject to constant stress and heavy loads, this extra strength ensures they won’t buckle under pressure. With 7075-T6, you’re getting a spacer that can handle the rigors of tough terrain and high-performance driving without breaking a sweat.

Weight Reduction: Less Weight = Better Performance

Here’s another win for 7075-T6: it’s not just stronger, it’s lighter too. Reducing rotational weight (the weight of parts like wheels, tires, and spacers) has a direct impact on your vehicle’s suspension performance, handling, and overall ride dynamics.

By using lighter materials like 7075-T6 aluminum for wheel spacers, you can improve how your vehicle responds to the road. This translates to better handling, quicker acceleration, and more precise braking—benefits that every driver will notice and appreciate.

Resistance to Fatigue: Wheel Spacers Built to Last

Materials under constant stress can weaken over time, a process called fatigue. This is where 7075-T6 aluminum shines once again. Its superior fatigue resistance means it’s less likely to crack, deform, or fail after years of repeated stress cycles. If you’re looking for long-term reliability in your wheel spacers, 7075-T6 is your best bet for maintaining structural integrity over time.

Corrosion Resistance: Holding Up Against the Elements

Both 7075-T6 and 6061-T6 aluminum offer solid corrosion resistance, but 7075-T6 has the edge. This matters because wheel spacers are constantly exposed to rain, snow, road salt, and debris. With 7075-T6 aluminum, you get spacers that resist corrosion better, keeping their appearance and strength intact longer—even in harsh environments.

What’s the Catch?

While 7075-T6 aluminum clearly outperforms 6061-T6 in strength, weight, fatigue resistance, and corrosion resistance, there is one trade-off: cost. Manufacturing 7075-T6 aluminum is more complex and the material itself is more expensive. However, when it comes to something as critical as wheel spacers, the investment in 7075-T6 pays off by delivering unmatched performance and durability.

Why RokBlokz Wheel Spacers Are the Best Choice

At RokBlokz, we use 7075-T6 forged aluminum to craft our Wheel Spacers, ensuring they can handle whatever you throw at them—whether it’s off-roading, high-speed driving, or everyday commutes. These spacers are designed to provide the strength, reliability, and performance you need, all while keeping weight to a minimum.

If you’re serious about your vehicle’s performance and safety, there’s no question: wheel spacers made from 7075-T6 aluminum are the way to go. RokBlokz Wheel Spacers don’t just meet expectations—they exceed them. Click HERE to Shop Now!