Head to head

Polyfibre Panthera 16 (1.30) vs Yonex Poly Tour HS 16 (1.30)

They split the measurements 3–3. The widest gap is ball bite, where Panthera 16 (1.30) is 28 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Polyfibre

Panthera 16 (1.30)

Polyester · 16 ga

Yonex

Poly Tour HS 16 (1.30)

Polyester · 16 ga

Stiffness lower = softer, kinder on the arm
21381st pct
21482nd pct
Tension loss lower = stays where you strung it
2945th pct
2843rd pct
Energy return higher = livelier, more free power
8846th pct
8850th pct
Spin potential higher = more spin off the string bed
5.364th pct
5.056th pct
Ball bite higher = grabs the ball harder
0.48873rd pct
0.43145th pct
String friction lower = strings slide and snap back
0.09250th pct
0.08739th pct

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.

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.

Coming from Panthera 16 (1.30) at 52 lb

String Poly Tour HS 16 (1.30) at 51.7 lb 23.5 kg

Coming from Poly Tour HS 16 (1.30) at 52 lb

String Panthera 16 (1.30) at 52.3 lb 23.7 kg

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.

Panthera 16 (1.30) mains / Poly Tour HS 16 (1.30) crosses

Stiffness81st pct · 1 measured
Tension loss44th pct · 1 measured
Energy return48th pct · 1 measured
Spin potential63rd pct · 1 measured
Ball bite70th pct · 1 measured
String friction48th pct · 1 measured

Poly Tour HS 16 (1.30) mains / Panthera 16 (1.30) crosses

Stiffness82nd pct · 1 measured
Tension loss44th pct · 1 measured
Energy return49th pct · 1 measured
Spin potential58th pct · 1 measured
Ball bite50th pct · 1 measured
String friction43rd pct · 1 measured

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.

Panthera 16 (1.30)

~27 hours of play

Poly Tour HS 16 (1.30)

~27 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Polyfibre Panthera 16 (1.30) Polyester16find21329885.30.4880.092
Yonex Poly Tour HS 16 (1.30) Polyester16find21428885.00.4310.087

Add a third string Panthera 16 (1.30) in full Poly Tour HS 16 (1.30) in full