Originally Posted by avi8tir
I went with HRE P43SC in 21". I was dead set on the P40SC... but I had P40's on my two previous E60 M5's (not the Conical series). Asked opinions of my firends and fiance... and every single person said P43SC. It's different and very sporty.
I was at HRE today and you will no doubt have some weight loss with your 21's since I had a very nice drop in lbs with my 20's:
PSS Tires 265x35 and 295x30x20 included in the following:
HRE P44SC 20x9.5 weighed 46.2lbs Stock 20x9 wheels weighed 51.0lbs
HRE P44SC 20x10.5 weighed 51.0lbs Stock 20x10 wheels weighed 56.6lbs
So you might be 2 or 3 lbs heavier in the 21 inch format plus increase tire weight. Make sure you go with PSS's in the 21's; its the lightest tire.