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Browse all 791

Head to head

Gamma Live Wire XP 17 (1.27) vs Yonex Tour Super Pro 850 16 (1.32)

Tour Super Pro 850 16 (1.32) leads on 4 of 6 measurements. The widest gap is string friction, where Tour Super Pro 850 16 (1.32) is 14 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Gamma

Live Wire XP 17 (1.27)

Nylon · 17 ga

Yonex

Tour Super Pro 850 16 (1.32)

Nylon · 16 ga

Stiffness lower = softer, kinder on the arm
15013th pct
14911th pct
Tension loss lower = stays where you strung it
1913th pct
178th pct
Energy return higher = livelier, more free power
9384th pct
9381st pct
Spin potential higher = more spin off the string bed
4.030th pct
4.337th pct
Ball bite higher = grabs the ball harder
0.44552nd pct
0.42842nd pct
String friction lower = strings slide and snap back
0.11177th pct
0.10063rd 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 Live Wire XP 17 (1.27) at 52 lb

String Tour Super Pro 850 16 (1.32) at 52.6 lb 23.9 kg

Coming from Tour Super Pro 850 16 (1.32) at 52 lb

String Live Wire XP 17 (1.27) at 51.4 lb 23.3 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.

Live Wire XP 17 (1.27) mains / Tour Super Pro 850 16 (1.32) crosses

Stiffness12th pct · 1 measured
Tension loss11th pct · 1 measured
Energy return82nd pct · 1 measured
Spin potential31st pct · 1 measured
Ball bite51st pct · 1 measured
String friction74th pct · 1 measured

Tour Super Pro 850 16 (1.32) mains / Live Wire XP 17 (1.27) crosses

Stiffness12th pct · 1 measured
Tension loss9th pct · 1 measured
Energy return82nd pct · 1 measured
Spin potential36th pct · 1 measured
Ball bite45th pct · 1 measured
String friction67th 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.

Live Wire XP 17 (1.27)

~36 hours of play

Tour Super Pro 850 16 (1.32)

~38 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Gamma Live Wire XP 17 (1.27) Nylon17find15019934.00.4450.111
Yonex Tour Super Pro 850 16 (1.32) Nylon16find14917934.30.4280.100

Add a third string Live Wire XP 17 (1.27) in full Tour Super Pro 850 16 (1.32) in full