During our recent “4WD Week” I wrote up a 2007 S4 DTM edition, a car that while attractive I felt was pretty overpriced. In fact, I said that even though it was a limited edition I didn’t think it was nearly as desirable as the 2006 run of 250 25th Anniversary of Quattro S4s. These S4s were really like a diet RS4, gaining suspension upgrades, revised exterior pieces and some special interior treatments, and importantly a revised rear sport differential that really transformed the car’s handling. Additionally, the limited S4s got the best looking wheels of the bunch, special Ronals that appeared on both the Ultrasport Titanium package for the A4 and on this car in normal silver. More than just a limited edition sticker and special color (I’m looking at you, Lime Rock Park edition M3), this car was a culmination of lots of little changes that made for a bridge model between the normal S4 and the RS4: