Dunlop Comfort Poly 17 vs Tecnifibre Black Code 17

Measured, side by side

Bars are percentile against all 791 strings, and the marked side is the one that measures better, which is not always the one you want. A firmer bed is worse for your elbow and better for your control, and no measurement knows which of those you came for.

Which one wins, by problem

Each string's standing on the site's rankings, out of every measured string in the database. This is where a comparison stops being arithmetic and starts being a decision.

• More spin and shape

  Comfort Poly 17430th

  Black Code 17421st

• Easier on my arm

  Comfort Poly 17764th

  Black Code 17758th

• More control, less launch

  Comfort Poly 1758th

  Black Code 1771st

• More power and depth

  Comfort Poly 17659th

  Black Code 17658th

• Plays the same for longer

  Comfort Poly 17542nd

  Black Code 17523rd

• Lasts longer before it breaks

  Comfort Poly 17398th

  Black Code 17531st

• Best feel and touch

  Comfort Poly 17685th

  Black Code 17673rd

Swapping between them: what tension?

Bed stiffness is published at one reference tension, so the only honest conversion is to scale it. These are starting points from 52 lb, not prescriptions. The calculator takes your own tension.

Hybrid: what if you used both?

Estimated, not measured. No hybrid combination has been tested as a bed. These figures are the two strings' own lab measurements weighted by how much of the bed each one actually is. Treat them as a guide to which way a pairing moves, never as lab data.

Open this in the hybrid builder

Which goes dead first?

Estimated from tension loss, which is the only thing the database measures about ageing. This is when the bed stops playing the way you strung it, not when the string breaks.

Both strings in full

Add a third string Comfort Poly 17 in full Black Code 17 in full