StringSpec
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Browse all 791

Head to head

L-Tec Premium 5S 16L (1.25) vs Luxilon 4G Rough 16L

4G Rough 16L leads on 4 of 6 measurements. The widest gap is string friction, where 4G Rough 16L is 14 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

L-Tec

Premium 5S 16L (1.25)

Polyester · 16L ga

Luxilon

4G Rough 16L

Polyester · 16L ga

Stiffness lower = softer, kinder on the arm
21079th pct
21684th pct
Tension loss lower = stays where you strung it
3762nd pct
3353rd pct
Energy return higher = livelier, more free power
8848th pct
9060th pct
Spin potential higher = more spin off the string bed
4.030th pct
4.235th pct
Ball bite higher = grabs the ball harder
0.41130th pct
0.39923rd pct
String friction lower = strings slide and snap back
0.10468th pct
0.09455th 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 Premium 5S 16L (1.25) at 52 lb

String 4G Rough 16L at 49.4 lb 22.4 kg

Coming from 4G Rough 16L at 52 lb

String Premium 5S 16L (1.25) at 54.3 lb 24.6 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.

Premium 5S 16L (1.25) mains / 4G Rough 16L crosses

Stiffness81st pct · 1 measured
Tension loss59th pct · 1 measured
Energy return54th pct · 1 measured
Spin potential31st pct · 1 measured
Ball bite29th pct · 1 measured
String friction66th pct · 1 measured

4G Rough 16L mains / Premium 5S 16L (1.25) crosses

Stiffness82nd pct · 1 measured
Tension loss56th pct · 1 measured
Energy return56th pct · 1 measured
Spin potential33rd pct · 1 measured
Ball bite24th pct · 1 measured
String friction57th 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.

Premium 5S 16L (1.25)

~21 hours of play

4G Rough 16L

~24 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
L-Tec Premium 5S 16L (1.25) Polyester16Lfind21037884.00.4110.104
Luxilon 4G Rough 16L Polyester16L$21.5021633904.20.3990.094

Add a third string Premium 5S 16L (1.25) in full 4G Rough 16L in full