2015 Specialized Tarmac AC15 vs 2015 Specialized Allez E5 Smartweld
The 54 is the Specialized Allez E5 Smartweld size closest to your 54 Specialized Tarmac AC15. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Specialized Allez E5 Smartweld
Compared with the Specialized Tarmac AC15 in 54, the Specialized Allez E5 Smartweld in 54 places the top of the head tube 4 mm higher and about as far forward, relative to the bottom bracket.
- Frame stack
- +4 mm
- Higher front end
- Frame reach
- ±0 mm
- About the same reach
- Wheelbase
- ±0 mm
- About the same
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Tarmac AC15, 54Specialized Allez E5 Smartweld, 54Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Tarmac AC15 54 | Specialized Allez E5 Smartweld 54 | Difference |
|---|---|---|---|
| Reach | 387mm | 387mm | ±0 mm |
| Stack | 543mm | 547mm | +4 mm |
| Head tube angle | 73° | 73° | ±0.0° |
| Seat tube angle | 73.5° | 73.5° | ±0.0° |
| Effective top tube | 548mm | 548mm | ±0 mm |
| Chainstay length | 405mm | 405mm | ±0 mm |
| Wheelbase | 978mm | 978mm | ±0 mm |
| BB drop | 69mm | 69mm | ±0 mm |
| Standover | 775mm | 798mm | +23 mm |
| Seat tube length | 481mm | 500mm | +19 mm |
| Head tube length | 140mm | 145mm | +5 mm |
Differences are the Specialized Allez E5 Smartweld minus the Specialized Tarmac AC15. Full charts: 2015 Specialized Tarmac AC15, 2015 Specialized Allez E5 Smartweld.
Where each sits in its class
Specialized Tarmac AC15Specialized 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.
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