[elisiX]

It seems like forever but a week and a half has passed and my car arrives tomorrow.

As most of you might appreciate, i've been investigating mods in the interim and one of the first things I wanted to do was swap out the stock M50d 469M wheels. Even though they are unique to the M50d, I don't like the 20" size with the size of the X5. I had 21" wheels on my Audi SQ5 which is a smaller vehicle but the balance was perfect.

I've got an opportunity to pick up a brand new set of genuine M Performance 599M wheels on Pirelli RFT's. I'd be able to trade my wheels (468M) for 50% value. Basically the 599M cost over $9k AUD brand new from BMW, or about $7000 AUD from ebay sellers. It sounds like a good deal ($3500 AUD + my 468M wheels).

What I am wondering however is how the 599M fit in comparison to the 468M/469M wheels which come standard on the M50d and M Sport X5's respectively. Are they a wider wheel and will therefore fill out the guards more than the stock wheels, removing the need for spacers? And also how you think they will ride in comparison to the stock 20's.

Appreciate any thoughts you guys may have.