
These may be the best looking wheels for an E53 X5 (I think), but sourcing new rear tyres has been a mission. 325/30/R21 are advertised as available in most places and are shown as in stock, but if you check they aren't. There's plenty of run flats, but I didn't want to mix types and they give a very choppy ride.
I wanted PZeros and after a few failed attempts and wasted journeys I called Pirelli directly. Yes they are still made, but the best lead time they could offer was 8 weeks. So with the MOT due in few days I had to find something. There's not much to choose from. 21" seems to be a real problem and I had the same problem with other suppliers with long lead times.
In the end I had to opt for Dunlop Sport Maxx Race XL which were mighty expensive. Having said that, the levels of grip are outstanding.