Ah - maybe they don't sell those parts. If you go to Land Rover Merriam they have full searchable parts catalogue for all the current LR models. So you can search the part for the LR4 and the disco and see if the numbers are the same.

I went through this process last fall for or 2017 Discovery. I eventually found the most cost effective solution was to buy a set of new 20" OEM take-offs on eBay. They were unused and were mounted with new Goodyear F1 tires. I mounted winter tires on the wheels and am storing the Goodyears to replace the Discovery's factory tires when they wear out. So for the price of one new alloy wheel (if purchased from the dealer), we got 4, plus 4 new tires.

Anyway, worth having a look around eBay or Craigslist.

I figured it was a long shot, but I contacted TuffAnt (https://www.tuffant.com) about getting their wheels here in the US. Sounds like they're still sorting out the D5 version and are looking for a US distributor.

Hopefully they're getting enough inquiries to motivate them, but I get the impression we're getting close to having options.

If we have the interest, might even be worth looking into a group buy.

I have a 2018 Disco and I am going to want snow tires. My last car was an explorer with 20" rims but I put 17" snow tire rims and appropriately taller tires to come out to the same size overall.
Anyone do that with your Disco's or do you stick with the factory size for the rims? My Disco has the 20" wheels that come with the HSE Lux

I think 18" wheels will be the smallest you'll get over the L462's brakes. As discussed above, we're hoping for someone to release an 18" wheels soon. I'll be putting an offload tire on mine. I'll assess snows after I see how they do in winter.