Rolex
Datejust 31 178288-0059— lug 16mm

The lug width of the Rolex Datejust 31 178288-0059 is 16mm. This narrower specification is particular to the 31mm solid gold Datejust models and requires proportionately-dimensioned straps. To verify compatibility, measure the space between the two lateral lugs using a mechanical calliper, perpendicular to the watch case surface.

For a Datejust 31 in yellow gold, we recommend vegetable-tanned alligator (dark brown, cognac, aged leather) or shell cordovan for durability and timelessness. Both create an elegant dialogue with the precious metal without competing visually. Black grained calf is the contemporary choice for those favouring contrast. Avoid straps in bright or floral colours: they would betray the formal restraint of the watch.

Changing a Rolex strap requires specific tools: a spring bar removal tool or a Rolex-designed pin extractor. Place the case on a soft cloth, gently push the spring bar from one side of the lug to remove it, repeat on the other side. Align the new strap's holes with the lugs, reinsert the spring bars with firm pressure. If inexperienced, entrust this to an official Rolex watchmaker or our Casati Milano atelier.

Yes, the 178288-0059 is fully compatible with premium 16mm aftermarket artisanal straps. Our alligator, calf and shell cordovan straps respect Rolex manufacturing tolerances precisely. Using a premium aftermarket strap does not void Rolex warranty provided the strap is fitted by a competent watchmaker and the watch sustains no damage during the procedure.

A premium leather strap (alligator, shell cordovan, calf) on daily-wear Rolex typically lasts 3–5 years. Longevity depends on intensity of use, climate, maintenance and leather quality. Vegetable-tanned alligator ages beautifully, developing rich patina. Our bespoke Casati Milano straps carry an 18-month manufacturing defect warranty; replacement thereafter reflects natural leather wear, which is a desirable characteristic, not a fault.