[Towlie]

I've read a few reviews of the Dinan S1 Package for the X5 M. I just bought a 2015 X5 M with low miles. It is the Donnigan Grey with the gorgeous extended Red leather. I had a 1998 X5 4.6 that someone had rode hard and hung out to dry one time to many.

Thus far, I'm amazed at the acceleration and fit and finish. The most incredible attribute by far though is the handling. I had a 2007 335i with the M package that handled almost as well as my 2001 E46 M3. The way that my X5 M communicates all the way up to its limit is incredible. The body roll is also controlled beyond the limits of physics it seems.

I would like to get the Dinan package. I had it on my 335i and beat a 2012 Vette off the line in a 1/4 mile with my wife, kids, and a bike rack once. It costs about 10,000 though. Can you really feel the extra 100 hp which starts out as 30-40 at the low rpms?