Specialized Tarmac SL8 Comp - Shimano 105 Di2 vs BMC Teammachine SLR ONE

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

The short answer

For a typical all-round rider the Specialized Tarmac SL8 Comp - Shimano 105 Di2 comes out ahead (74% against 71%). That is not a universal verdict — change the terrain or the priority and the order can flip.

Specialized

Tarmac SL8 Comp - Shimano 105 Di2

74% for a typical rider

£3,599 at Brand website

✓ Checked

BMC

Teammachine SLR ONE

71% for a typical rider

£3,799 at Brand website

✓ Checked

What actually separates them

Price: The Specialized Tarmac SL8 Comp - Shimano 105 Di2 is £200 cheaper — £3,599 against £3,799.
Weight: The Specialized Tarmac SL8 Comp - Shimano 105 Di2 is 0.6kg lighter, which you notice on long climbs more than anywhere else.

Side by side

Spec	Tarmac SL8 Comp - Shimano 105 Di2	Teammachine SLR ONE
Price	£3,599	£3,799
Weight	7.7 kg	8.3 kg
Frame	carbon	carbon
Groupset	Shimano 105 Di2 R7170 2x12 electronic	Shimano Ultegra Di2 R8100 2x12 electronic
Stack / reach	1.43	1.44
Tyre clearance	32 mm	32 mm
Lowest gear	29 in	29 in
Mudguard mounts	No	No
Comfort	30	39
Speed	81	70
Climbing	74	66
Value	25	17

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.

Find my bike