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Specialized Roubaix SL8 Comp - Shimano 105 Di2 vs BMC Roadmachine ONE

Both are endurance bikes at a similar price. Here is what actually separates them.

The short answer

For a typical all-round rider the Specialized Roubaix SL8 Comp - Shimano 105 Di2 comes out ahead (77% against 75%). That is not a universal verdict — change the terrain or the priority and the order can flip.

Specialized

Roubaix SL8 Comp - Shimano 105 Di2

77% for a typical rider

£3,599 at Brand website
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BMC

Roadmachine ONE

75% for a typical rider

£3,799 at Brand website
✓ Checked

What actually separates them

Price
The Specialized Roubaix SL8 Comp - Shimano 105 Di2 is £200 cheaper — £3,599 against £3,799.
Riding position
The Specialized Roubaix SL8 Comp - Shimano 105 Di2 sits you more upright (1.56 stack-to-reach against 1.53). The BMC Roadmachine ONE is the more aggressive of the two — quicker if you can hold it, harder work if you cannot.
Tyre clearance
The Specialized Roubaix SL8 Comp - Shimano 105 Di2 takes 40mm tyres against 34mm — the single most common thing buyers wish they had more of.

Side by side

Spec Roubaix SL8 Comp - Shimano 105 Di2 Roadmachine ONE
Price £3,599 £3,799
Weight 8.8 kg 8.6 kg
Frame carbon carbon
Groupset Shimano 105 Di2 R7170 2x12 electronic Shimano Ultegra Di2 R8100 2x12 electronic
Stack / reach 1.56 1.53
Tyre clearance 40 mm 34 mm
Lowest gear 26 in 27 in
Mudguard mounts Yes Yes
Comfort 73 69
Speed 46 50
Climbing 66 65
Value 18 15

Neither might be the right answer

This page assumes an average rider. Tell us how you actually ride and we will rank these two against everything else at the price.

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