Building a Fat Tire Mini Bike is an exciting project that blends the fun of mini bikes with the rugged appeal of off-road vehicles. One of the most crucial decisions in this build is selecting the right wheels. This guide, inspired by discussions among mini bike enthusiasts, will walk you through the essential considerations for choosing wheels for your fat tire mini bike.
Understanding Fat Tire Mini Bike Wheels
When it comes to fat tire mini bikes, the wheels are not just about aesthetics; they significantly impact performance, stability, and the overall look of your ride. Let’s delve into the key aspects you need to consider.
Standard Fat Tire Size
The discussion in the mini bike community often revolves around the 22x11x8 tire size as a classic and standard choice for fat tire mini bikes. This size offers a good balance of cushioning, traction, and availability. Carlisle knobby tires are frequently mentioned as a traditional, reliable option, although many modern variations are available in the market today.
Wheel Types: ATV, Golf Cart, and Trailer Wheels
Where do you source wheels for these beefy tires? Several options are popular among builders:
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ATV Wheels: Standard 8-inch ATV wheels are a common choice. They are readily available at stores like Northern Tool or Tractor Supply. However, a key point to consider with ATV wheels is offset. Many ATV wheels have an offset design where the mounting holes are not centered.
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Golf Cart Wheels: Golf cart wheels, particularly factory steel 8-inch wheels from those upgrading to lifted carts, are another cost-effective source. These can often be acquired affordably and come in sizes like 8×7, 8×8, or 8×9.
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Trailer Wheels: Trailer wheels, specifically 8×7 4 on 4 trailer wheels, are mentioned as a new and affordable option, often available without offset.
Offset vs. Centered Wheels: Can You Use Offset Rims?
The question of offset ATV wheels is a common one for builders. Yes, you can use offset rims for your fat tire mini bike. While most ATV wheels are indeed offset, this can be accommodated in your build.
To manage offset wheels, especially if you aim for a centered wheel setup, builders suggest custom hubs and axles. Alternatively, using a live axle configuration can simplify the integration of offset wheels.
Wheel Size Considerations: 8″, 10″, or 12″ Rims?
While 8-inch rims are traditional for the 22x11x8 fat tire size, some builders suggest considering larger diameters like 10-inch or 12-inch rims for modern builds.
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8-inch rims: Maintain the classic fat tire mini bike look and are compatible with the standard 22x11x8 tires. Golf cart and trailer wheels in this size are easily sourced.
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10-inch or 12-inch rims: Offer a more contemporary look and potentially a wider range of tire options in the long run. While 22x11x8 tires are still available, larger rim sizes might provide more “future-proof” your mini bike as tire trends evolve. GT (garden tractor) wheels in 10″ or 12″ sizes are mentioned, although they might be heavier than ATV wheels.
Live Axle and Hubs: Key Components for Your Fat Tire Build
For the rear axle setup, a live axle is frequently recommended, especially for drag bike applications and fat tire mini bikes. This setup involves both wheels being driven by a single axle.
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Go-Kart Hubs: Go-kart 4 on 4 hubs are suitable for live axle setups. Front go-kart hubs with bearings and rear keyed hubs for a 1-inch shaft are mentioned. These hubs are designed to work with 4 on 4 trailer rims. Some suppliers offer rear hubs with integrated bearings and sprocket mounts, simplifying the build.
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ATC (All-Terrain Cycle) Parts: Parts from a Honda ATC 3-wheeler, particularly a blown or rolled chassis, are a resourceful option. The front forks and wheels can be adapted, and for a live rear axle, a keyed hub and sprocket drive plate from an ATC can be utilized.
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Front Hub as Rear Hub: Using a front hub for the rear wheel can save fabrication work. Builders have successfully used front hubs and adapted them for the rear, sometimes requiring a custom axle to achieve proper wheel centering.
Conclusion: Choosing Your Fat Tire Mini Bike Wheels
Selecting the right wheels for your fat tire mini bike project is a balance of achieving the desired look, ensuring functionality, and working within your fabrication capabilities. Whether you opt for classic 8-inch rims and 22x11x8 tires, explore larger 10 or 12-inch options, or utilize resourceful parts like golf cart or ATC components, understanding these core considerations will pave the way for a successful and awesome fat tire mini bike build. Remember to prioritize a robust hub and axle setup, especially when using offset wheels or considering a live axle for enhanced performance.
