Following for responses.

 

i have 2 of these:

Amazon.com: Favoto Motorcycle Cover All Season Universal Sturdy Material Waterproof Sun Outdoor Protection with Night Reflective Stripe Lock-Holes & Storage Bag Fits up to 86.6" Motorcycles Vehicle Cover : Automotive

Buy Favoto Motorcycle Cover All Season Universal Sturdy Material Waterproof Sun Outdoor Protection with Night Reflective Stripe Lock-Holes & Storage Bag Fits up to 86.6" Motorcycles Vehicle Cover: Vehicle Covers - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

https://amazonau.gcs-web.com/news-releases/news-release-details/customers-new-zealand-can-now-shop-millions-products-amazoncomau

https://www.amazon.com.au/Favoto-Waterproof-Motorcycle-Heat-Resistant-Protection/dp/B07S48X5VH/

the smaller for the Vulcan S (no top case, no panniers) and the larger for the BMW K1600. Id say the 108" version would fit your requirements.

another suggestion here:

Bike cover + mirrors

Does anyone else use a bike cover for their Vulcan 650 S? Does it fit well? I got a O.E. Kawi "premium cover" when I bought the bike. Yeah, I probably paid way too much. The quality seems good, but the fit is ... m'eh. I think it's a generic cover that is supposedly fits multiple Kawi bikes...

www.vulcanforums.com

which is: Amazon.com: FENRIR 108" Motorcycle Cover Waterproof Outdoor Storage Exhaust Pipe Anti-Scalding Antenna Hole for Touring Gold Wing Star Venture K1600GTL Roadmaster Pursuit CVO Road Glide Ultra Limited Voyager : Automotive

 

Another vote for the Fenrir. Best cover I've had!