Head to head

Diadem Solstice Pro 16L (1.25) vs Solinco Hyper-G 18 (1.15)

They split the measurements 3–3. The widest gap is tension loss, where Hyper-G 18 (1.15) is 7 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Diadem

Solstice Pro 16L (1.25)

Polyester · 16L ga

Solinco

Hyper-G 18 (1.15)

Polyester · 18 ga

Stiffness lower = softer, kinder on the arm
17945th pct
18046th pct
Tension loss lower = stays where you strung it
3150th pct
2844th pct
Energy return higher = livelier, more free power
8956th pct
8850th pct
Spin potential higher = more spin off the string bed
7.393rd pct
7.595th pct
Ball bite higher = grabs the ball harder
0.58994th pct
0.61797th pct
String friction lower = strings slide and snap back
0.08126th pct
0.08229th 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 Solstice Pro 16L (1.25) at 52 lb

String Hyper-G 18 (1.15) at 51.7 lb 23.5 kg

Coming from Hyper-G 18 (1.15) at 52 lb

String Solstice Pro 16L (1.25) 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.

Solstice Pro 16L (1.25) mains / Hyper-G 18 (1.15) crosses

Stiffness45th pct · 1 measured
Tension loss49th pct · 1 measured
Energy return54th pct · 1 measured
Spin potential94th pct · 1 measured
Ball bite95th pct · 1 measured
String friction28th pct · 1 measured

Hyper-G 18 (1.15) mains / Solstice Pro 16L (1.25) crosses

Stiffness46th pct · 1 measured
Tension loss47th pct · 1 measured
Energy return53rd pct · 1 measured
Spin potential94th pct · 1 measured
Ball bite96th pct · 1 measured
String friction28th 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.

Solstice Pro 16L (1.25)

~25 hours of play

Hyper-G 18 (1.15)

~27 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Diadem Solstice Pro 16L (1.25) Polyester16Lfind17931897.30.5890.081
Solinco Hyper-G 18 (1.15) Polyester18$13.9918028887.50.6170.082

Add a third string Solstice Pro 16L (1.25) in full Hyper-G 18 (1.15) in full