Strap for Formula 1 Quartz Chronograph Stainless Steel / Red

The lug width of the TAG Heuer Formula 1 CAZ101AN.FT8055 is 20mm. This dimension is determined by the distance between the two slots on the case where the spring bars are inserted. To verify precisely, use a digital calliper to measure the space between the case lugs at 12 o'clock and 6 o'clock positions.

The most suitable strap depends on your intended use and personal preference. For refined sportiness, alligator or shell cordovan elevates the case's sophistication. For daily wear with natural patina development, vegetable-tanned calf leather creates a unique texture over time. For maximum versatility and practicality, a heavyweight canvas NATO allows rapid changes without tools.

To change the strap, remove the lateral spring bars using a spring bar tool or dedicated removal pin. Once the bars are extracted, the previous strap slides off easily. Insert the new strap by aligning the lugs with the case slots and press the spring bars until fully seated. If inexperienced, the Casati Milano atelier offers this service by appointment.

Yes, numerous aftermarket straps are compatible with the 20mm lug width. Milano Straps offers a curated selection of artisanal straps in various leathers—alligator, calf, shell cordovan—and styles including NATO and alligator. Straps are available online ready for dispatch and customisable in length, thread colour, and initials.

Leather strap longevity depends on material quality and usage. Premium alligator or shell cordovan with vegetable tanning typically lasts 3–5 years of daily wear, developing a natural patina that enhances aesthetic value. Vegetable-tanned calf leather maintains elasticity for 2–4 years. Casati Milano warrants 18 months on artisanal straps. Proper care and alternating straps significantly extends lifespan.