Hi guys i am about to order and S4 for my wife and is wondering if the sports differential is really worth it.

When pricing comes out that will really tell you. I've got a pair of them inbound with it so hopefully i'll get to try it before they're gone. But I doubt it.

Well, unless she will drive it hard to make it of any use of it...why bother? I see lots of AMG, S, and M cars putting around DC...with old dudes and women driving them, that I doubt ever actually spin them up for a fun ride. I don't mean track days either, I take my S4 on local backroads all the time....ony see bikes, STi's, Evo's, a Z or two, maybe a Porsche...out having fun with me. Even on highway ramps...they (S, AMG, and M cars) are putting around, which in itself is dangerous trying to merge into traffic with a clear shot...

Is the car truly for the wife, or is it a 2nd car for yourself? :)

lol...

Hi guys i am about to order and S4 for my wife and is wondering if the sports differential is really worth it.

Yes, yes, and yes, esp if you track it or drive quickly in canyons.

http://www.evo.co.uk/carreviews/evocarreviews/230373/audi_s4.html

Considering an A5 2.0T quattro + MTM Stage II with ADS and the sport differential to replace her 320 cabrio.

The sport differential is so much more than a limited slip diff, it actively transfers power to the correct wheel across the same axle.