JST said:
Any info you can give would be appreciated.
I liked both tires....
The RE730s had MUCH lower wear, almost nil. My S-03s wear fast at the track. Both are predictible tires with good amounts of at the limit feedback, S-03s a little better due to the stiffer sidewalls and tread compound. The S-03s certainly have more grip and seem to respond better to quick transitions. With the RE730s, being smoother is more important because they don't have as much grip. The S-03s are louder and have a harsher ride. At the track you can build them up into an insanely loud roar, RE730s give off more of a wooshing noise at the limit. The S-03s seemed more forgiving because of the higher limits, "I'm understeering a bit, I'll just turn in harder" The car does it with S-03s. Do this with the 730s, and you are more likely to load up a tire and slow down on the car using the outer front wheel.
S-03s- ~$15 more per tire, wears fast, loud, VERY sticky
RE730s- slighly cheaper, harder compund, low wear, very good grip
I think the RE730s will cost you a second or so at auto-x over the S-03s, but you will have to be smother and hopefully (!) improve. I have not seen a street tire that can grip like the S-03 though, it is truly phenomenal. You will save some cash with RE730s, but if the grip sacrefice is fine with you, you won't be disappointed...