For info guys, I dealt with Clint (email
clint@tirerack.com) who was pretty good. I purchased 4 x 20” inch run flats for the X5 and 4 for the M3 – all went very well. The only glitch to be careful of is to ensure that Tirerack clearly show on all documentation that the tyres are
new. If this is unclear in any way Australian customs will sting you for around $200 for an inspection fee where they check for dirt, bugs etc.