Strap for Rolex Day-Date 36 118235

The lug width of the Rolex Day-Date 36 ref. 118235 is 20 millimetres. This measurement is taken between the inner edges of the spring bars that connect the case to the strap lugs. It is essential to use a digital calliper to obtain an accurate measurement, as even 1 mm variance would result in an incompatible strap. All straps intended for the 118235 must have exactly 20 mm lug width.

For the 118235, alligator remains the most appropriate choice both stylistically and functionally. The natural texture of the scutes pairs perfectly with the formal character of this watch. Alligator offers exceptional resistance to wear, ages gracefully, and maintains the classic elegance of the model. Alternatively, shell cordovan represents the highest density available, with a finish that develops a captivating patina over time. For those preferring modern versatility, embossed calf alligator combines traditional aesthetics with a slightly more supple leather.

Strap removal requires extracting the spring bars that connect the case to the lug holes. The safest method involves using a dedicated spring bar tool, which allows you to gently push the small pin inward, releasing the spring tension. Once loosened from one side, the pin slides out easily. To prevent scratches on the case, protect the edges with a microfibre cloth. If you are unfamiliar with the procedure, entrust the replacement to a specialised artizan to ensure maximum precision and case safety.

Absolutely. The 118235 accepts quality aftermarket straps provided they conform to the 20 mm lug width and original spring bar diameter (typically 1.8 mm). A quality leather aftermarket strap not only improves wearing comfort but also allows you to adapt the watch to your personal style. A premium aftermarket strap — crafted in alligator, shell cordovan, or with vegetable tanning — represents both an aesthetic and functional evolution beyond the original solution, offering greater colour versatility and superior materials.

The lifespan of a leather strap depends on the quality of craftsmanship, the type of tanning, and usage patterns. An artisanal strap made from alligator or shell cordovan with vegetable tanning can last 4 to 7 years with regular daily wear. Longevity extends if the strap is rotated with alternative solutions, allowing the leather to rest. A strap protected by a warranty against manufacturing defects — such as Casati Milano's 18-month guarantee — ensures free replacement in case of leather failure or stitching breakdown within the specified period. Edge wear and colour change are not covered by warranty, as they represent the natural ageing of leather.