2017 Specialized Tarmac Expert Disc vs 2015 Specialized Allez E5 Smartweld
The 52 is the Specialized Allez E5 Smartweld size closest to your 52 Specialized Tarmac Expert Disc. 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 Expert Disc in 52, the Specialized Allez E5 Smartweld in 52 places the top of the head tube 3 mm lower and about as far forward, relative to the bottom bracket.
- Frame stack
- −3 mm
- Lower front end
- Frame reach
- −1 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 Expert Disc, 52Specialized Allez E5 Smartweld, 52Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Tarmac Expert Disc 52 | Specialized Allez E5 Smartweld 52 | Difference |
|---|---|---|---|
| Reach | 386mm | 385mm | −1 mm |
| Stack | 526mm | 523mm | −3 mm |
| Head tube angle | 73° | 73° | ±0.0° |
| Seat tube angle | 74° | 74° | ±0.0° |
| Effective top tube | 537mm | 537mm | ±0 mm |
| Chainstay length | 405mm | 405mm | ±0 mm |
| Wheelbase | 970mm | 970mm | ±0 mm |
| BB drop | 71.5mm | 71.5mm | ±0 mm |
| BB height | 270mm | not listed | |
| Standover | 755mm | 777mm | +22 mm |
| Seat tube length | 462mm | 480mm | +18 mm |
| Fork length | 368mm | not listed | |
| Head tube length | 120mm | 120mm | ±0 mm |
Differences are the Specialized Allez E5 Smartweld minus the Specialized Tarmac Expert Disc. Full charts: 2017 Specialized Tarmac Expert Disc, 2015 Specialized Allez E5 Smartweld.
Where each sits in its class
Specialized Tarmac Expert 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 Expert DiscExpert Disc | Specialized Allez E5 Smartweld |
|---|---|---|
| Shifter | Shimano ST-RS685 | not listed |
| Derailleur | Shimano Ultegra R6800 | not listed |
| Cassette | Shimano Ultegra | not listed |
| Chain | Shimano HG70 | not listed |
| Crankset | FSA SL-K | not listed |
| Wheelset | DT Swiss R470 | not listed |
| Tire | Specialized S-Works Turbo | not listed |
| Brake | Shimano BR-785 | not listed |
| Saddle | Specialized Toupe Expert | not listed |
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