StringSpec
String finder

Browse all 791

Head to head

Kirschbaum Pro Line II 18 (1.15) vs Solinco Tour Bite Diamond Rough 17 (1.20)

They split the measurements 3–3. The widest gap is ball bite, where Tour Bite Diamond Rough 17 (1.20) is 36 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Kirschbaum

Pro Line II 18 (1.15)

Polyester · 18 ga

Solinco

Tour Bite Diamond Rough 17 (1.20)

Polyester · 17 ga

Stiffness lower = softer, kinder on the arm
18349th pct
18248th pct
Tension loss lower = stays where you strung it
4681st pct
4473rd pct
Energy return higher = livelier, more free power
8843rd pct
8737th pct
Spin potential higher = more spin off the string bed
4.543rd pct
4.337th pct
Ball bite higher = grabs the ball harder
0.43547th pct
0.51683rd pct
String friction lower = strings slide and snap back
0.09759th pct
0.11982nd 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 Pro Line II 18 (1.15) at 52 lb

String Tour Bite Diamond Rough 17 (1.20) at 54.3 lb 24.6 kg

Coming from Tour Bite Diamond Rough 17 (1.20) at 52 lb

String Pro Line II 18 (1.15) at 49.1 lb 22.3 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.

Pro Line II 18 (1.15) mains / Tour Bite Diamond Rough 17 (1.20) crosses

Stiffness49th pct · 1 measured
Tension loss78th pct · 1 measured
Energy return40th pct · 1 measured
Spin potential41st pct · 1 measured
Ball bite54th pct · 1 measured
String friction67th pct · 1 measured

Tour Bite Diamond Rough 17 (1.20) mains / Pro Line II 18 (1.15) crosses

Stiffness48th pct · 1 measured
Tension loss76th pct · 1 measured
Energy return40th pct · 1 measured
Spin potential38th pct · 1 measured
Ball bite79th pct · 1 measured
String friction79th 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.

Pro Line II 18 (1.15)

~16 hours of play

Tour Bite Diamond Rough 17 (1.20)

~18 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Kirschbaum Pro Line II 18 (1.15) Polyester18find18346884.50.4350.097
Solinco Tour Bite Diamond Rough 17 (1.20) Polyester17$13.9918244874.30.5160.119

Add a third string Pro Line II 18 (1.15) in full Tour Bite Diamond Rough 17 (1.20) in full