Here's an easy way to check ROI.

Go to tirerack.com and see how much the oem tires will cost to replace.

We replaced my wife's Conti Sport A/S on her mini cooper s, which uses 17"s and they were around $280.00 each. They are RFT's

My Michelin Pilot Sport A/S 17's $170.00 each. They are not RFT's.

__________________
2013 S4 Loaded (and NO RFT's) Awesome is an understatement
2008 MT X3 RIP you were a faithful sidekick and will be missed.
2007 AT X3 RIPOS
2005 GC
2000 Jeep Cherokee
1997 Twin Turbo RX-7
1984 GTI Wolfsburg Edition Neuspeed and more