Head to head

Diadem Solstice Pro 16L (1.25) vs Volkl V-Star 18L (1.15)

Solstice Pro 16L (1.25) leads on 4 of 6 measurements. The widest gap is ball bite, where Solstice Pro 16L (1.25) is 13 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

Volkl

V-Star 18L (1.15)

Polyester · 18L ga

Stiffness lower = softer, kinder on the arm
17945th pct
17442nd pct
Tension loss lower = stays where you strung it
3150th pct
3354th pct
Energy return higher = livelier, more free power
8956th pct
8952nd pct
Spin potential higher = more spin off the string bed
7.393rd pct
6.586th pct
Ball bite higher = grabs the ball harder
0.58994th pct
0.51181st pct
String friction lower = strings slide and snap back
0.08126th pct
0.07921st 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 V-Star 18L (1.15) at 53.4 lb 24.2 kg

Coming from V-Star 18L (1.15) at 52 lb

String Solstice Pro 16L (1.25) at 50.7 lb 23.0 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 / V-Star 18L (1.15) crosses

Stiffness44th pct · 1 measured
Tension loss52nd pct · 1 measured
Energy return54th pct · 1 measured
Spin potential92nd pct · 1 measured
Ball bite94th pct · 1 measured
String friction25th pct · 1 measured

V-Star 18L (1.15) mains / Solstice Pro 16L (1.25) crosses

Stiffness44th pct · 1 measured
Tension loss52nd pct · 1 measured
Energy return54th pct · 1 measured
Spin potential87th pct · 1 measured
Ball bite84th pct · 1 measured
String friction22nd 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

V-Star 18L (1.15)

~24 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
Volkl V-Star 18L (1.15) Polyester18L$10.9917433896.50.5110.079

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