2015 Specialized Tarmac Disc vs 2015 Specialized Allez E5 Smartweld
The Specialized Allez E5 Smartweld size closest to your 54 is the 54. Compare the 54 instead
What changes on the Specialized Allez E5 Smartweld
Compared with the Specialized Tarmac Disc in 54, the Specialized Allez E5 Smartweld in 49 places the top of the head tube 20 mm lower and 7 mm further back, relative to the bottom bracket. Its wheelbase is 8 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −20 mm
- Lower front end
- Frame reach
- −7 mm
- Shorter frame reach
- Wheelbase
- −8 mm
- Shorter: quicker to change direction
- Head angle
- −0.8°
- Slacker: calmer steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Tarmac Disc, 54Specialized Allez E5 Smartweld, 49Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Tarmac Disc 54 | Specialized Allez E5 Smartweld 49 | Difference |
|---|---|---|---|
| Reach | 387mm | 380mm | −7 mm |
| Stack | 543mm | 523mm | −20 mm |
| Head tube angle | 73° | 72.25° | −0.8° |
| Seat tube angle | 73.5° | 75.5° | +2.0° |
| Effective top tube | 548mm | 518mm | −30 mm |
| Chainstay length | 405mm | 405mm | ±0 mm |
| Wheelbase | 978mm | 970mm | −8 mm |
| BB drop | 69mm | 71.5mm | +3 mm |
| Standover | 775mm | 741mm | −34 mm |
| Seat tube length | 481mm | 460mm | −21 mm |
| Head tube length | 140mm | 120mm | −20 mm |
Differences are the Specialized Allez E5 Smartweld minus the Specialized Tarmac Disc. Full charts: 2015 Specialized Tarmac Disc, 2015 Specialized Allez E5 Smartweld.
Where each sits in its class
Specialized Tarmac DiscSpecialized Allez E5 Smartweld
Each bike is ranked against the other road bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Specialized Tarmac DiscS-Works Di2 Disc | Specialized Allez E5 Smartweld |
|---|---|---|
| Shifter | Shimano 785 Di2 | not listed |
| Derailleur | Shimano Dura Ace Di2 | not listed |
| Cassette | Shimano Dura-Ace | not listed |
| Chain | Shimano Dura-Ace | not listed |
| Wheelset | Roval Rapide CLX 40 SCS | not listed |
| Tire | Specialized S-Works Turbo | not listed |
| Brake | Shimano 785 | not listed |
| Saddle | Specialized Toupé Pro | not listed |
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