Specialized Roubaix SL8 - Shimano Tiagra vs Dolan ADX Titanium Disc - Shimano 105 R7120

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 - Shimano Tiagra comes out ahead (74% against 71%). That is not a universal verdict — change the terrain or the priority and the order can flip.

Specialized

Roubaix SL8 - Shimano Tiagra

74% for a typical rider

£2,499 at Brand website

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Dolan

ADX Titanium Disc - Shimano 105 R7120

71% for a typical rider

£2,500 at Brand website

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What actually separates them

Price: The Specialized Roubaix SL8 - Shimano Tiagra is £1 cheaper — £2,499 against £2,500.
Tyre clearance: The Specialized Roubaix SL8 - Shimano Tiagra takes 40mm tyres against 35mm — the single most common thing buyers wish they had more of.

Side by side

Spec	Roubaix SL8 - Shimano Tiagra	ADX Titanium Disc - Shimano 105 R7120
Price	£2,499	£2,500
Weight	9.4 kg	9.5 kg
Frame	carbon	titanium
Groupset	Shimano Tiagra R4000 mechanical	Shimano 105 R7120 mechanical
Stack / reach	1.56	1.55
Tyre clearance	40 mm	35 mm
Lowest gear	26 in	27 in
Mudguard mounts	Yes	Yes
Comfort	73	61
Speed	37	43
Climbing	58	53
Value	25	20

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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