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Wilson

NXT Max 15L (1.35)

Nylon Gauge 15L 1.25 mm In production

Lab measurements for Wilson NXT Max 15L (1.35), ranked against all 789 strings in the database. Every figure below is a testing-machine result at a fixed reference tension, not a playtest opinion.

Measured values

Stiffness

156lb/in

lower = softer, kinder on the arm

Tension loss

13%

lower = stays where you strung it

Energy return

92%

higher = livelier, more free power

Spin potential

7.2

higher = more spin off the string bed

Ball bite

0.630COF

higher = grabs the ball harder

Snapback

0.087COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 156 lb/in · 19th pct

Stiffer than 19% of strings tested.

Tension loss 13 % · 2nd pct

Sheds more tension than 2% of strings tested — outstanding tension maintenance.

Energy return 92 % · 74th pct

Livelier than 74% of strings tested.

Spin potential 7.2 · 92nd pct

More spin potential than 92% of strings tested — elite spin generation.

Ball bite 0.630 COF · 98th pct

Grips the ball harder than 98% of strings tested — bites the ball hard through the brush.

Snapback 0.087 COF · 39th pct

More string-on-string friction than 39% of strings tested.

Strings that play like this

Closest matches across stiffness, tension loss, energy return and spin potential.

Gosen AK Pro CX 16 (1.30) 96% match Head Synthetic Gut PPS 17 (1.25) 94% match Wilson NXT 15L (1.35) 94% match Gosen AK Control 17 (1.24) 94% match Babolat Synthetic Gut 17 (1.25) 91% match Wilson NXT Duramax 16 (1.32) 90% match

More from Wilson

What these numbers mean

Stiffness · lb/in

How much the string bed resists deflection. Higher plays firmer and more controlled; lower plays softer and easier on the arm.

Tension loss · %

Share of the reference tension the string sheds under a fixed test protocol. Lower means the bed stays where you strung it for longer.

Energy return · %

Share of impact energy handed back to the ball. Higher plays livelier and more powerful.

Spin potential

Ball friction divided by string-on-string friction. Higher means better bite with a cleaner snapback, so more spin.

Ball bite · COF

String-on-ball friction. Higher grabs the ball harder through the brush.

Snapback · COF

String-on-string friction. Lower lets the mains slide and snap back into place after impact.

Compare NXT Max 15L (1.35) against 789 strings Find the right string for me