You'll perhaps need to mention a shortlist of perhaps 4/5 wheel sets that you like and would want to buy given there's so much choice out there. Perhaps also put forward the budget you have in mind to spend as this can vary from a few hundred dollars to 8,9, 10 thousand dollars !
I'd say 18's are too small for the size and proportions of an E63 M6. 19's were standard I believe and 20's are just an inch larger and fit/match the car's proportions very well. It's your choice of course! will you be looking for 3 piece wheels so you can change lips/barrels to the look you want? looking or 1 piece lighter material wheels? Tuner brand wheels? aftermarket high quality brands?
I'm selling a complete set of OEM stock S62 exhaust manifolds from my 2001 BMW M5. Professionally removed by Murray BMW at 48,081 miles when I had Evolve long-tubes installed.
$200 plus shipping. Pay via PayPal.
OEM BWM E39 M5 exhaust manifolds for sale by kfanciu, on Flickr
OEM BWM E39...
I have a brand new updated unit of the Radtec oil cooler for the E60 M5 platform. Made in the UK. This is the improved version with the reinforced welds. Asking $740 shipped or best offer. Located in Maryland, USA. Local pickup is ok for $700. Sorry, will not ship overseas - might consider...
As some of you already know, I part out E39 M5's on a constant and nearly full time basis these days. As of today I've owned 16 E39 M5's, 13 of which were/are parts cars. I generally have 3-4 complete cars on hand at any given time. I'll keep updating this thread as cars are added.
My brother had an E39 M5 and bought these brakes ($500 value) and never installed them. They are OEM fitment and will mount directly. They are in their original plastic and boxes. Had to empty a storage unit and came across these