Shimano Tiagra 4700: Performance and Value

When considering bicycle components, particularly for road cycling, Shimano's Tiagra groupset has consistently offered a compelling blend of performance, durability, and affordability. The Tiagra 4700, in particular, represents a significant leap forward for Shimano's fourth-tier offering, bringing features and aesthetics previously reserved for higher-end groupsets down to a more accessible price point. This article delves into what makes Shimano Tiagra brakes and the 4700 groupset a popular choice for many cyclists, examining their capabilities, cost, and how they stack up against other offerings in the market.

Understanding Shimano Tiagra Brakes

Shimano Tiagra brakes, specifically the dual-pivot calliper design found in the 4700 series, are engineered with Shimano's Linear Response (SLR) technology. This technology is designed to optimise power transfer and provide a faster, more responsive braking feel. For the rider, this translates to increased confidence and control, especially during descendent sections or when needing to brake suddenly. Key features of these brakes include:

• Dual Pivot Design: This standard design offers a good balance of stopping power and modulation.
• Shimano Linear Response (SLR): Aims to reduce friction within the brake system for a more direct feel.
• Adjustable Toe-In Brake Shoe: Allows for fine-tuning of the brake pads to prevent squealing and ensure optimal contact with the rim.
• Functional Quick Release: A straightforward mechanism for quick wheel removal and installation, enhancing practicality.

While the Tiagra brakes offer solid performance, it's important to note that they are often cited as the component where the gap between Tiagra and higher-tier groupsets like 105 is most noticeable. While they will certainly stop you effectively, they might lack the nuanced feel and feedback that more premium brakes provide. The brake blocks themselves are one-piece, which means replacing them isn't as simple as the cartridge-style brakes found on 105 and Ultegra.

The Tiagra 4700 Groupset: A Closer Look

The Tiagra 4700 groupset is Shimano's latest iteration of this popular component line, and it brings with it a host of improvements that make it feel much closer to its more expensive siblings. Shimano's philosophy is to introduce their newest and best features on their top-tier Dura-Ace groupset and then allow these advancements to 'trickle down' through the ranges. The 4700 benefits significantly from this trickle-down effect.

Key Improvements in Tiagra 4700:

Appearance and Ergonomics: The most striking changes are in the aesthetics and feel. The shifter bodies now share the same compact shape as 105 and Ultegra, making them comfortable to hold and operate. Crucially, the shift cables are now routed underneath the handlebar tape, resulting in a much cleaner and more integrated look at the front of the bike. While the brake levers are made of alloy rather than carbon fibre, this contributes to reduced cost without a significant impact on performance.

Shifting Performance: Shimano claims to have revised the cable pitch on the rear derailleur, leading to more precise and durable shifting. In practice, the 10-speed shifting is clean, smooth, and quiet. The shifters are responsive, even when changing gears rapidly or under load. While the shift feel might be slightly heavier than Dura-Ace or Ultegra, this is a minor point given the substantial price difference. The new chainset is also a significant visual upgrade, adopting the four-arm design first seen on Dura-Ace, giving it a much more modern and premium look.

Chainset Options: The new Tiagra chainset is available in various configurations, including 52/36T and 50/39/30T. The 50/34T compact option, often chosen by bike manufacturers, is likely to be the most popular. The four-arm design with a 110mm bolt circle diameter (BCD) offers flexibility, allowing for different chainring combinations to be fitted without needing to replace the entire chainset, which is a great benefit for riders who like to fine-tune their gearing.

Tiagra 4700 Cost and Value Proposition

Shimano Tiagra 4700 groupsets are typically found on new bikes in the £700 to £1,200 price range, depending on frame materials and other specifications. For example, a complete Tiagra-equipped aluminium road bike might retail around £750. It's worth noting that manufacturers sometimes substitute cheaper brakes or chainsets to meet specific price targets, so it's always wise to check the exact specification of a bike.

When evaluating the cost, it's essential to consider the value proposition. The Tiagra 4700 offers a level of performance, finish, and attention to detail that is truly impressive for its price bracket. The improvements over previous Tiagra versions are substantial, making it a much more attractive option for both new bike buyers and those looking to upgrade from lower-tier groupsets.

Tiagra vs. 105: The Key Differences

The primary decision point for many cyclists when choosing between Tiagra and Shimano's next-tier 105 groupset often comes down to the number of speeds and the associated cost. Tiagra 4700 remains a 10-speed system, whereas 105 is an 11-speed system. This difference in speed limits direct compatibility between the two groupsets in certain areas, particularly with derailleurs and shifters.

11-Speed vs. 10-Speed: While 10-speed is perfectly adequate and was the standard for many years, 11-speed offers slightly smaller jumps between gears and a wider overall gear range with certain cassette combinations. For a rider building their own bike, the approximate £100 retail price difference between Tiagra and 105 might justify the longer wait or saving, especially for the better brakes, marginal weight savings, and the future-proofing that 11-speed provides.

Braking Performance: As mentioned earlier, the brakes are a clear area where 105 outperforms Tiagra. While Tiagra brakes are functional, 105 offers superior feel and stopping power.

Weight: Higher-tier groupsets generally incorporate lighter materials, resulting in lower overall weight. While Tiagra 4700 is not heavy, 105 will offer some weight savings.

Weight Comparison (Approximate):

To provide a clearer picture, here are the approximate weights of individual Tiagra 4700 components (as weighed by a reputable cycling publication during testing):

Adding approximately 200g for cables brings the total to around 2.8kg. While not the lightest, this is respectable for a groupset in this price category.

Can You Mix Tiagra 4700 with Other Shimano Components?

Mixing components from different Shimano groupsets can be a nuanced process, and compatibility often depends on specific pull ratios and intended use. The question of mixing a 9-speed mountain bike derailleur with 10-speed Tiagra 4700 STI shifters, for instance, highlights a common challenge.

Pull Ratios: Shimano uses different cable pull ratios for its road and mountain bike components, and even between different generations of road components. For example, a 9-speed mountain bike derailleur (like the Deore RD-M591) typically has a different cable pull ratio than 10-speed Shimano road shifters (like the Tiagra 4700 STI). This mismatch is likely the reason for the described shifting issues, such as skipping gears or shifting multiple cogs with a single click. The goal of extending climbing gear range by using a wider-range cassette (like an 11-36t) with a mountain bike derailleur and road shifters is a common ambition, but it often requires specific derailleur models designed for compatibility (e.g., Shimano's own 10-speed road derailleurs with long cages are designed to handle larger cassettes, or specific 'road-compatible' mountain derailleurs).

General Compatibility Guidelines:

• Shifters and Rear Derailleurs: These are the most critical components for shifting compatibility. Generally, Shimano 10-speed road shifters are designed to work with 10-speed Shimano road derailleurs. Mixing mountain bike derailleurs requires careful consideration of pull ratios.
• Chainsets and Bottom Brackets: These are often more interchangeable, though bottom bracket standards (e.g., threaded BSA, press-fit) need to match the frame.
• Brakes: Brake levers and callipers are generally cross-compatible within Shimano's road lines, though braking power and feel can vary.

For the specific scenario of mixing a 9-speed Deore derailleur with 10-speed Tiagra 4700 shifters, the problem lies in the differing cable pull ratios. To achieve reliable shifting, one might need to use a derailleur with a compatible pull ratio, such as a Shimano 10-speed road derailleur (like the Tiagra 4700 rear derailleur itself, or perhaps an older 10-speed Ultegra or 105 derailleur), or explore aftermarket solutions like a 'RoadLink' adapter if using a mountain bike derailleur.

Conclusion: Is Tiagra 4700 Worth It?

Shimano Tiagra 4700 is an impressive groupset, especially considering its price point. It offers a significant upgrade in terms of appearance, ergonomics, and functionality compared to previous Tiagra iterations. The improvements bridge a considerable gap to the more expensive 105 groupset, making it a fantastic option for:

• New Bike Buyers: If you're purchasing a new road bike in the £700-£1,200 range, a bike specced with Tiagra 4700 will undoubtedly offer excellent value and a thoroughly enjoyable riding experience.
• Upgraders: Riders upgrading from older or lower-tier groupsets will immediately appreciate the smoother shifting, improved aesthetics, and more comfortable shifter hoods.
• Budget-Conscious Enthusiasts: For those building a bike or upgrading on a budget, Tiagra 4700 provides a reliable and capable platform that doesn't compromise too heavily on performance or aesthetics.

The main consideration remains the choice between 10-speed Tiagra and 11-speed 105. If budget allows and 11-speed is a priority for marginal gains or future-proofing, 105 is the choice. However, if you're happy with 10-speed and want the best performance for your money, the Tiagra 4700 is an outstanding option that delivers on its promise of bringing high-level cycling technology to a more accessible market. Its improved design and functionality make it a big step forward for the Tiagra line.

Frequently Asked Questions:

Q1: What is the main advantage of Shimano Tiagra 4700 brakes?
A1: The main advantage is their use of Shimano Linear Response (SLR) technology for improved responsiveness and power transfer, along with adjustable toe-in brake shoes for fine-tuning.

Q2: Is Tiagra 4700 compatible with 11-speed groupsets?
A2: No, Tiagra 4700 is a 10-speed groupset and is not directly compatible with 11-speed Shimano road components in terms of shifters and derailleurs due to differing cable pull ratios.

Q3: How does Tiagra 4700 compare to Shimano 105?
A3: Tiagra 4700 is generally considered a tier below 105. Key differences lie in the number of speeds (10 vs. 11), brake performance (105 is superior), weight (105 is lighter), and overall refinement. However, the gap has significantly narrowed with the 4700 series.

Q4: Can I use a mountain bike rear derailleur with Tiagra 4700 shifters?
A4: It's often problematic due to different cable pull ratios. While some specific combinations might work with adapters or particular derailleur models, it's generally recommended to use road-specific derailleurs for optimal shifting performance with road shifters.

Q5: What kind of bikes typically feature the Tiagra 4700 groupset?
A5: Tiagra 4700 is commonly found on mid-range road bikes, endurance bikes, and sportive models, typically priced between £700 and £1,200.