I really don't know why some guys here make the redline limit a huge deal. IMHO, 7500rpm on the F80 m3 is not bad at all. It's not that BMW made the redline on the F80 M3 only at 6000rpm.
The 1968 Honda S800 has a 9,500rpm redline. Yes, you read that right. 9,500rpm redline! The acoustics may be there, fun to drive, but if your into auto-x or racing, it is not faster than a 1989 mazda miata.
I guess it's about the engine note sound for some guys here. I'm more of a performance guy, so it does not matter if the F80 M3 has a lower redline than the e90/e92/e93 m3. 7500rpm vs 8300rpm.
1968 Honda S600 specs:
http://thisoldhonda.org/generations_detail.php?ID=26
1989 Miata specs:
http://www.motortrend.com/classic/ro...a/viewall.html
Here's a link for '64 Honda S600 that has a 9500rpm redline:
http://nzhondas.com/goo-tube/113015-...ne-1964-a.html
Here's a link for a '68 S800 that has a 10,000rpm redline!
http://www.reddit.com/r/carporn/comm...line_1217x810/
Jay Leno's high revving '64 Honda S600: