Bulgari

• Straps from different Octo models are not directly interchangeable. The Finissimo models (including steel and titanium references) have specific notched ends at the lugs, while straps like the Solotempo rubber options are straight-ended — so they won’t fit cleanly or securely.

• One member tested an aftermarket strap and confirmed it didn’t fit, though he salvaged some parts like the buckle and spring bars.

• Another user mentioned the existence of metal adapters that theoretically allow regular straps to fit, but their fit and finish are questionable, and no one in the thread had successfully used them.

• Custom rubber straps were discussed as a possibility, but seem impractical unless you're willing to go the DIY route (modifying existing straps or molding your own), which may not yield strong or durable results.

So unfortunately, it sounds like putting a rubber strap from a titanium model onto a steel Finissimo isn’t feasible without compromises in either fit or aesthetics.

Are 30MM Octo straps interchangeable?