Strap for Formula 1 Quartz 43 Stainless Steel / Bundesliga

The lug width of the TAG Heuer Formula 1 WAZ1013.BC0890 is precisely 20mm. This dimension is the standard for the Formula 1 collection in the 43mm case size and is measured perpendicularly between the two lugs where the strap attaches to the case. When replacing the original strap, ensure that your new strap is specifically sized for 20mm to guarantee a perfect fit in the lugs.

For the WAZ1013.BC0890, several strap materials are recommended depending on your intended use: natural alligator offers elegance and vibrant texture, ideal for semi-formal occasions; vegetable-tanned calf leather provides a balance between sportiness and sophistication with a developing patina; shell cordovan in dark tones creates a polished, formal finish; FKM rubber ensures practical sports-oriented functionality while keeping the case design visible. Your choice depends on the context of use and personal colour preference.

To change the strap on your WAZ1013.BC0890, you will need a spring bar removal tool. Insert the tool into the small slot on the side of the lug, press inward to compress the spring, and then remove the old strap. Repeat on the opposite lug. Next, align your new 20mm strap with the lugs and insert the spring bars, ensuring they seat firmly. If you lack experience, consult a professional watchmaker to avoid damaging the case.

Any strap sized for a 20mm lug width is compatible with the WAZ1013.BC0890, provided the spring bars are compatible (universal standard). Artisan straps from Milano Straps are crafted from premium leathers—alligator, vegetable-tanned calf, shell cordovan—and are customizable in size, colour, and stitching. Always verify that the lug width is 20mm before purchase and choose a strap length matching your original for optimal comfort.

The lifespan of a natural leather strap depends on the tannage and daily use: quality vegetable-tanned calf leather typically lasts 3–5 years under regular conditions; natural alligator, thanks to the robustness of its fibre structure, can exceed 5–7 years; shell cordovan, being a very dense leather, easily reaches 7–10 years. Exposure to perspiration, moisture, and sunlight accelerates ageing. To extend strap longevity, avoid prolonged water exposure, dry it quickly if exposed to humidity, and occasionally apply a natural leather conditioner. Professional repair services can further extend durability.