Strap for Black Bay Fifty-Eight Stainless Steel / Navy Blue / Fabric

The lug width of the Tudor Black Bay 58 79030B-0003 is 20 millimetres. This width was deliberately chosen to maintain correct proportions between the 39 mm case diameter and the strap. You can verify the measurement by placing a digital calliper on the inner surface of the two metal pins protruding from the case lugs. The measurement must be precise to one tenth of a millimetre to ensure correct strap compatibility.

The best strap depends on intended use and personal preference. For formal contexts, we recommend black alligator with visible grain texture. For nautical or diving applications, a grey anthracite FKM (Viton) rubber strap offers excellent salt water and UV resistance. If you seek elegance with character, a mahogany-toned shell cordovan develops natural patina over time. For casual daily wear, a navy Cordura NATO strap combines practicality with sporty aesthetics. Your choice of material should be coherent with the brushed-polished finish of the case.

To change the strap, follow these steps: (1) Position the watch on a flat surface with the dial facing downwards. (2) Locate the two metal pins protruding from the case lugs. (3) Using a spring bar tool or small lever, gently push the pin upwards from below whilst supporting the lug. The pin will retract and you can extract the old strap. (4) Align the two holes of the new strap with the pins and insert it first on one side, then compress the pin and secure it on the other side. Ensure the strap sits firmly and does not rotate.

Yes, absolutely. The Tudor Black Bay 58 accepts quality aftermarket straps with a 20 millimetre lug width. Numerous specialist manufacturers produce straps in alligator, shell cordovan, vegetable-tanned calf, FKM rubber and NATO specifically dimensioned for this measurement. Choosing an aftermarket strap allows you to personalise your watch according to your style and usage requirements whilst maintaining mechanical and aesthetic compatibility with the Tudor case. We recommend selecting manufacturers who understand the proportion and finish of the Tudor case.

The lifespan of a leather strap varies according to material type, intensity of use, and maintenance. A quality alligator or shell cordovan strap can last between three and five years with moderate daily wear. A vegetable-tanned calf strap, being softer, tends to show visible signs of wear after two to three years, though this patina is considered part of its aesthetic appeal. Durability is significantly reduced if the strap is frequently exposed to moisture, salt water, or extreme temperature fluctuations. Regular maintenance with dedicated leather creams and rotating between multiple straps considerably extends product lifespan.