20 Rims with Tires

I have a set of 20" XD series with Royal performance royal black tires on. Tires at 90% tire size 265/50R20 PCD on rim 6/139. Looking for R15k or to swop for 16" or 17" Rims with tires all terrain around 245/70 R16. Or 265/65/17. Or original Nissan Harbody rims.

ZAR15,000