20" sizes and M4 concept

[Neil McRae]

After seeing the wheels on GOLFRR's car I am in awe of them and am going to get my own set. I just wondered if anyone knows the offsets of the 20's on the M4 concept car, I think they are called 666M but not sure.

The tyres sizes I managed to grab of the many hi-res photos

front -> 255/30x20
rear -> 275/30x20

In theory the tyre sizes above are the closest to making the wheel the same size as the OEM 19s so speedo etc shouldn't be too hugely affected.

Lots of folks seem to be going with:

20x9.5 ET20 20x11 ET37

with front 265/30 and rear as 295/30 or 305/30

just wanted peoples views... input on what they've done and how it feels to drive.
no idea on the width or offset of the 666M wheels which would be good to get.

Neil.