Buell XB12XT Tyre Sizes & More

The Buell XB12XT Ulysses, often hailed as the adventure-touring sibling to its more road-biased counterparts, presents a compelling proposition for riders looking to tackle a variety of terrains. While perhaps not directly competing with the behemoths of the adventure bike world like BMW's GS range, the XB12XT offers a distinct flavour of rugged capability. This article aims to provide comprehensive information regarding its tyre specifications, explore its general performance and ownership experience, and answer common questions potential buyers might have.

Buell XB12XT Tyre Specifications

For any motorcycle, but especially one designed for mixed-terrain riding, the correct tyre size is paramount for safety, handling, and optimal performance. The Buell XB12XT Ulysses is fitted with specific tyre sizes that are crucial for its intended use. These are:

Front Tyre: 120/70ZR17

Rear Tyre: 180/55ZR17

These sizes are designed to work in harmony with the bike's suspension and chassis geometry, providing a balance of grip on tarmac and stability when encountering less-than-perfect road surfaces. It's always recommended to consult your owner's manual or a qualified mechanic for the most accurate and up-to-date tyre information for your specific model year, as minor variations can sometimes occur.

Understanding the Tyre Codes

Let's break down what these numbers and letters mean:

• 120: This is the tyre's width in millimetres, measured from sidewall to sidewall.
• 70: This is the aspect ratio, expressed as a percentage of the width. So, the sidewall height is 70% of 120mm.
• Z: This indicates a speed rating, typically for speeds over 149 mph (240 km/h).
• R: This signifies that the tyre has a Radial construction, which is standard for most modern performance motorcycles.
• 17: This is the diameter of the wheel rim in inches that the tyre is designed to fit.
• 180: The width of the rear tyre in millimetres.
• 55: The aspect ratio of the rear tyre (55% of 180mm).
• ZR: Again, indicating radial construction and a speed rating suitable for very high speeds.

Is the Buell XB12X Ulysses a Good Bike?

The question of whether the Buell XB12X Ulysses is a "good bike" is subjective and depends heavily on a rider's expectations and intended use. However, based on its design and owner feedback, we can paint a clearer picture.

Design Philosophy

The XB12XT Ulysses was conceived as an adventure-touring motorcycle, blending the upright riding position and long-travel suspension typical of adventure bikes with Buell's characteristic sportbike DNA. This results in a machine that is:

• Versatile: Capable of handling commuting, touring, and light off-road excursions.
• Powerful: Equipped with Buell's signature V-twin engine, offering strong torque and acceleration.
• Unique: Distinctive styling and engineering that sets it apart from conventional motorcycles.

Owner Reviews and Capabilities

As noted, owners have reviewed their Buell XB12XT Ulysses models, rating various aspects of the bike. Generally, the Ulysses is praised for:

• Engine Performance: The 1203cc V-twin engine provides ample power and a satisfying rumble, making for spirited riding.
• Handling on Paved Roads: Despite its adventure styling, the Ulysses handles exceptionally well on tarmac, leaning into corners with confidence. The frame-integrated fuel-tank and under-seat exhaust contribute to a low centre of gravity, enhancing agility.
• Comfort for Touring: The upright riding position and relatively comfortable seat make it suitable for longer journeys, especially when compared to more aggressive sportbikes.
• Build Quality: Buell bikes are generally known for their robust construction and unique engineering solutions.

However, like any motorcycle, it has its considerations:

• Fuel Range: Some riders find the fuel range to be somewhat limited for extensive touring, necessitating more frequent fuel stops.
• Suspension on Rough Roads: While it can handle rough roads, it might not offer the same plushness or adjustability as some dedicated, high-end adventure bikes. However, it's certainly more capable than a standard sport-tourer.
• Aftermarket Support: As Buell is no longer in production, aftermarket parts and specialised support might be less readily available than for more mainstream brands.

Comparison to Competitors

When comparing the Buell XB12XT to the likes of the BMW GS range, it's important to acknowledge their different design priorities. BMW GS bikes are typically built with a more extensive off-road capability and touring range in mind, often featuring larger fuel tanks and more sophisticated, electronically adjustable suspension. The Buell XB12XT, while capable of venturing off the beaten path, leans more towards a sporty, all-round performance that excels on paved roads and can handle a bit of gravel or dirt track with confidence. It's a bike for riders who appreciate Buell's distinctive engineering and want an adventure-styled machine with a sporty edge, rather than a pure off-road conqueror.

Maintenance Considerations

Owning a Buell, especially one no longer in current production, means being proactive with maintenance. Key areas to focus on include:

• Regular Servicing: Adhering to the recommended service intervals for oil changes, filter replacements, and valve adjustments is crucial for engine longevity.
• Brake System: Buell's perimeter front brake system is distinctive. Ensure the brake fluid is changed regularly and the pads and rotors are in good condition.
• Belt Drive: The XB12XT uses a belt drive for the rear wheel. Keep the belt clean and properly tensioned according to the manufacturer's specifications. Belt replacement is typically needed at higher mileage intervals than chain drives.
• Electrical System: As with any motorcycle, regularly check electrical connections for corrosion and ensure the battery is in good health.

Frequently Asked Questions (FAQs)

Q1: What is the top speed of a Buell XB12XT Ulysses?

While specific top speed figures can vary depending on rider weight, conditions, and modifications, the Buell XB12XT Ulysses is generally capable of speeds exceeding 125 mph (200 km/h).

Q2: Can I fit off-road tyres to a Buell XB12XT Ulysses?

While you can technically fit tyres with a more aggressive tread pattern, it's crucial to ensure they are of the correct size and have the appropriate speed and load ratings for the bike. Fitting significantly knobbly tyres might compromise on-road handling and safety due to the bike's intended use and road-focused wheel size (17-inch rims).

Q3: What is the fuel capacity of the Buell XB12XT Ulysses?

The Buell XB12XT Ulysses typically has a fuel tank capacity of around 17 litres (approximately 4.5 US gallons). This offers a reasonable, though not class-leading, range for touring.

Q4: Where can I find spare parts for a Buell XB12XT Ulysses?

Finding parts can be more challenging due to Buell's production status. Specialist Buell dealers, online forums dedicated to Buell motorcycles, and reputable aftermarket parts suppliers are your best bet. Some parts may be interchangeable with other Buell models or even Harley-Davidson models (given Buell's historical ownership).

Q5: Is the Buell XB12XT Ulysses comfortable for two-up riding?

The Ulysses is generally considered to be reasonably comfortable for a pillion passenger, with a decent seat and passenger footpegs. However, like most sport-touring or adventure bikes of its size, extended two-up touring might highlight limitations compared to larger, dedicated touring machines.

Conclusion

The Buell XB12XT Ulysses remains a unique and capable motorcycle for riders seeking a blend of sportbike performance and adventure-touring versatility. Its specific tyre sizes, 120/70ZR17 at the front and 180/55ZR17 at the rear, are key to its balanced handling. While it may not compete directly with the ultimate off-road prowess of some larger adventure bikes, it offers a distinctive, engaging, and surprisingly competent package for those who appreciate Buell's innovative engineering and want a bike that can confidently handle both the daily commute and a weekend escape down less-travelled roads.