The Seismic Alpha wheels have generated a lot of buzz in the longboarding community, and it’s time for a deep dive into what makes them so popular. This review will explore the performance of the Seismic Alpha 75.5mm wheels, specifically focusing on the Mango scrubbies (Defcon urethane) version, and whether they live up to the hype.
Seismic Alpha longboard wheels with large cores
Seismic Alpha 75.5mm Wheel Specs
Before getting into the performance, let’s look at the specifications:
- Diameter: 75.5mm
- Width: 62.5mm
- Contact Patch: 62.5mm
- Durometer: 76a, 78a
- Urethane: Blackops and Defcon
- Core Placement: Slightly offset
Performance Review of the Seismic Alpha 75.5mm Wheels
Speed and Roll
These wheels are undeniably fast, easily the fastest I’ve personally tested. I achieved new top speeds on my local runs, going from a previous 42 mph to 45-47 mph. This increased speed can be attributed to the Defcon urethane and the large core design. The stiff core prevents the wheel from sagging, while the high-rebound Defcon urethane provides excellent roll speed. These wheels were also surprisingly easy to push and get rolling, contrasting with other wheels like the Cult Raptures and Bigzigs, which felt heavy and cumbersome when new. The combination of these features makes the Seismic Alpha ideal for speed enthusiasts.
Traction and Sliding
The Seismic Alphas offer a unique combination of traction and sliding capabilities. They provide a lot of edge control, resisting slides and maintaining grip when carving. However, when you initiate a slide, they break out smoothly and easily without slowing down as much as some other wheels. My ABEC 11 HD Bigzigs in 77a, for instance, had more slowing power but were also narrower. The Defcon urethane is designed for longevity. It should outlast the Bigzigs by a considerable margin.
The dual nature of these wheels, where they resist sliding but slide easily when broken free, can be challenging for some riders. Controlling the slide requires precision, and incorrect technique can lead to unexpected results. The Blackops urethane version of this wheel is known to have more slowing power, which could be a good option for riders seeking a more controlled slide.
Pavement Variability
The performance of the Seismic Alphas can vary depending on the pavement. On rougher surfaces, the wheels slide easily and smoothly, making for predictable slides. On smoother pavement, however, they grip more, resulting in more slowing power during slides. On some pavement types, the grip can become extreme, feeling almost “vice-like”. This variability might not be ideal for riders exploring new routes and diverse surfaces, but for those who skate the same spots consistently, it becomes a characteristic to adapt to. This adaptability is something that advanced riders will find valuable in their pursuit of improved technique and control.
Recommended Rider
These wheels are best suited for advanced riders or beginners who are looking for a challenge. The easy sliding nature of the Defcon urethane can be hard to control for less experienced riders. If a rider isn’t sliding perfectly, there is a tendency to ice out (sliding at 90 degrees without slowing down), which is particularly dangerous. A beginner may end up flat spotting the wheels while trying to learn to slide. In contrast, an advanced rider will be able to keep the wheels under 90 degrees and keep the wheel wear circular.
The Seismic Alphas provide an alternative to the grippy race wheels like the Abec Centrax or BigZigs. They allow you to push your limits, slow down, and refine your riding. The wheels allow a skilled rider to perfect their lines, demonstrating the true potential of the rider’s ability and skill. These wheels are favored by professional riders for their high performance, which is a testament to their quality.
Things to Watch Out For
There are a few things to consider before purchasing these wheels. Firstly, they are quite wide and may stick out from under the board. If your trucks are aligned with the edge of your board, the wheels will likely extend beyond the deck, which is a factor that is best to address prior to your purchase. Additionally, the tall profile may lead to wheelbite, especially at slower speeds. However, at higher speeds, it is less likely to be an issue because the angle of lean required to cause wheelbite is rarely achieved.
These wheels are not recommended for rain skating. The wide contact patch prevents effective weight distribution, making it difficult to slow down in wet conditions. The stiff lips also make it hard to gain traction, and the icy urethane does not grip wet pavement well. The Blackops version may be a better alternative in wet conditions, although this cannot be determined without testing. If these wheels aren’t for you, consider the Orangatang Kegels for a slightly easier slide.
Are the Seismic Alpha Wheels Worth It?
The Seismic Alphas are a worthy investment for riders looking to elevate their skills and explore the potential of a high-performing wheel. These wheels are designed to enhance a rider’s ability and allow them to fully utilize their skill, as opposed to relying on wheels with extreme grip like the Magnums. Professional longboarder Chase Hiller has set records and secured podium finishes while using the Seismic Alpha wheels.
While these wheels are not specifically designed for casual day-to-day riding due to their high-performance characteristics, they are a good investment for those who are looking for a durable wheel. The long life span of the urethane will ensure your money is well spent. The wheels will allow you to fine-tune your techniques as you ride. In a race environment or on a casual day out, the Seismic Alpha wheels prove their worth with impressive performance and longevity.
