Louis Erard
Excellence 85248AA89.BGA091— lug 20mm
Louis Erard Excellence 85248AA89.BGA091: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 20mm lug width to preserve the original sartorial balance."
Technical Specifications
Louis Erard 85248AA89.BGA091The essential strap measurement.
Browse 20mm straps →85248AA89.BGA091
Sellita caliber SW266-1 ND Hours, Minutes, Small Seconds
The Heritage
Compatible Straps
Selected for the 20mm lug width of the Excellence
FAQ
What is the lug width of the Louis Erard Excellence 85248AA89.BGA091?
The lug width of the Louis Erard Excellence 85248AA89.BGA091 is 20 millimetres. This measurement, expressed as the distance between the inner lugs that hold the strap, is the technical specification determining aftermarket strap compatibility. Correct measurement: position a digital calliper on the inner shoulder of the right or left lug, excluding the pin thickness, and read the value to the nearest millimetre.
Which strap would you recommend for this Louis Erard Excellence?
For the 85248AA89.BGA091, we recommend an alligator or shell cordovan strap for formal wear (dark brown, burgundy, or black tones); vegetable-tanned calf leather for refined daily use; NATO or rubber for sports environments or summer wear. The choice depends on predominant usage context: the strap must complement the classical elegance of the 39mm case without visual overload.
How do you change a strap on a Louis Erard watch?
Strap replacement requires no watchmaking expertise. Position the watch on a soft surface, use a springbar tool (lever or bifurcated needle instrument) to gently push the pin in one direction, extract the metal pin from the lug, remove the old strap and insert the new one by aligning the pins. Reverse the operation for attachment: the pin must enter completely with an audible click, without forcing.
Are all 20mm commercial straps compatible?
Nearly all standard 20mm straps are compatible with the Louis Erard Excellence 85248AA89.BGA091, provided the external diameter of the pins (typically 1.6–1.8 mm) matches the watch pins. We recommend always verifying the technical specifications of the strap before purchase, as non-standard dimensions could create lateral play or insertion difficulties.
What is the average lifespan of a leather strap?
A high-quality leather strap (alligator, calf, shell cordovan) with vegetable tanning has a lifespan of 3–7 years of daily use, conditional on climate, humidity levels and maintenance. A rubber strap lasts 10–15 years. A NATO strap in nylon resists degradation for over 10 years. Longevity depends on UV exposure, relative humidity and cleaning frequency: storing unused straps in dry, cool environments significantly extends useful life.