I have an existing Shopify site (with no data loaded) and I have two spreadsheets of detailed prices.
I also have a list of all the make and models of cars with each corresponding tyre which they use.
The site will sell tyres online.
On the site - The client should be able to create a profile and register his/her car using a drop-down or select type-of menu. It should be very intuitive and easy to use. Once the car (or more than one) has been registered - the available tyres on offer should be displayed with the corresponding price.
The alternative, the client should also be able to register a "bespoke vehicle" like a golf cart or tractor or bus - then manually enter the specification or size and giving it a unique name. All the detail is in the spreadsheets that will guide the different categories.
The default order should be 4 tyres.
The shipping detail will be added later but the site must be able to accommodate a shipping charge.
The e-commerce site MUST be able to run as an app on an Android as well as a Apple phone. And all the above functionalities should run smooth on both mobile apps (like registering etc)