Head to head

Prince Tour XS 1.35 vs SuperString Viper V2 Rough 16L

Tour XS 1.35 leads on 3 of 6 measurements. The widest gap is ball bite, where Viper V2 Rough 16L is 68 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Prince

Tour XS 1.35

Polyester

SuperString

Viper V2 Rough 16L

Polyester · 16L ga

Stiffness lower = softer, kinder on the arm
19664th pct
19462nd pct
Tension loss lower = stays where you strung it
3762nd pct
3865th pct
Energy return higher = livelier, more free power
9061st pct
8848th pct
Spin potential higher = more spin off the string bed
5.057th pct
5.057th pct
Ball bite higher = grabs the ball harder
0.3594th pct
0.48672nd pct
Snapback lower = strings slide and snap back
0.0727th pct
0.09759th pct

Bars are percentile against all 788 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 Tour XS 1.35 at 52 lb

String Viper V2 Rough 16L at 53.7 lb 24.4 kg

Coming from Viper V2 Rough 16L at 52 lb

String Tour XS 1.35 at 50.0 lb 22.7 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.

Tour XS 1.35 mains / Viper V2 Rough 16L crosses

Stiffness63rd pct · 1 measured
Tension loss63rd pct · 1 measured
Energy return58th pct · 1 measured
Spin potential57th pct · 1 measured
Ball bite12th pct · 1 measured
Snapback19th pct · 1 measured

Viper V2 Rough 16L mains / Tour XS 1.35 crosses

Stiffness62nd pct · 1 measured
Tension loss64th pct · 1 measured
Energy return56th pct · 1 measured
Spin potential57th pct · 1 measured
Ball bite65th pct · 1 measured
Snapback47th 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.

Tour XS 1.35

~21 hours of play

Viper V2 Rough 16L

~21 hours of play

Both strings in full

Every published measurement
StringGaugeStiff lb/inLoss %Power %SpinBite COFSnap COF
Prince Tour XS 1.35 Polyester19637905.00.3590.072
SuperString Viper V2 Rough 16L Polyester16L19438885.00.4860.097

Add a third string Tour XS 1.35 in full Viper V2 Rough 16L in full