I don't know what make MMC used in the ARP4, but it really is lovely to use both at speed and when parking, in fact it is so nice I have replaced the 14" wheel with a smaller 13" one with no ill effects, and it makes getting in and out easier too.
Give them a ring [do not write or email, you will never get an answer], and ask if it is available as an after market fitment on your car.
