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BMC Roadmachine ONE vs Giant Defy Advanced Pro 1

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

The short answer

For a typical all-round rider the Giant Defy Advanced Pro 1 comes out ahead (78% against 75%). That is not a universal verdict — change the terrain or the priority and the order can flip.

BMC

Roadmachine ONE

75% for a typical rider

£3,799 at Brand website
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Giant

Defy Advanced Pro 1

78% for a typical rider

£4,199 at Brand website
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What actually separates them

Price
The BMC Roadmachine ONE is £400 cheaper — £3,799 against £4,199.
Weight
The Giant Defy Advanced Pro 1 is 0.5kg lighter, which you notice on long climbs more than anywhere else.
Riding position
The BMC Roadmachine ONE sits you more upright (1.53 stack-to-reach against 1.50). The Giant Defy Advanced Pro 1 is the more aggressive of the two — quicker if you can hold it, harder work if you cannot.
Tyre clearance
The Giant Defy Advanced Pro 1 takes 40mm tyres against 34mm — the single most common thing buyers wish they had more of.
Climbing gear
The Giant Defy Advanced Pro 1 has the easier bottom gear (25 gear inches against 27), which matters more than weight on anything genuinely steep.

Side by side

Spec Roadmachine ONE Defy Advanced Pro 1
Price £3,799 £4,199
Weight 8.6 kg 8.1 kg
Frame carbon carbon
Groupset Shimano Ultegra Di2 R8100 2x12 electronic SRAM Rival AXS E1 2x12
Stack / reach 1.53 1.50
Tyre clearance 34 mm 40 mm
Lowest gear 27 in 25 in
Mudguard mounts Yes Yes
Comfort 69 64
Speed 50 59
Climbing 65 77
Value 15 11

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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