I had Michelin..
 

MXXX's OE on a '99' that I replaced with Kumho MX tires. On the 06 we have PS2's.

In no particular order I rate them:

Noise---MXXX, PS2, Kumho
Dry Trac--tie both Michelins
Wet-----PS2, Kumho
Responsiveness--MXX, PS2
Wear--MXX, Ps2?, Kuhmo
Price--Kumho, MXXX, Ps2

The PS2 has a softer side wall then I expected and I've bumped tire pressure to 32 front to offset that. The MXXX had razor sharp reflexes, wore for 30K, were quiet but don't get caught in a downpour with them. Kumho was cheap, decent traction and would make a good track tire if shaved. The PS2 is a very good all around tire but expensive.

YMMV...

why cant i find S03's in 18" Boxster CLW wheel size.. I must be doing somethng wrong.

Well I don't have my Boxster yet, but I had Potenzas on my Prelude and they just fell apart after 2 years. Might have been heat/weather related, but I have Kumho Ecsta ASXs on it now and they are awsome tires for the price. Had them for awhile and they still have plenty of tread left. Anyway, my $0.02.

They are there... I have them in size 225/40/18 Front and 285/30/18 Rears...

Yokohama
 

I have Yokohama tires on my Boxster. Came with the car when I bought it. Took it on the track a couple months ago and the tires performed excellent. I was flying around the turns and those tires grabbed, never slipped.
Anyone else have experience with the Yokohama tires?
How many miles can I expect to get out of them? They are holding up well so far (even after doing the track).

Yokohama tires are great. Had dB S2 on my SLK and they performed well enough... very quite too and great price. Only thing is that there are gone in just about 15K miles but they are just over half the cost of the Mitchelin PS2.

Hi,

As mentioned Yokos are great Tires. I had a set on my Esprit - AVS Intermediates. The thing I noticed was that their wear was not linear. At 10k mi. they looked almost new and had at least 85% of their Tread Depth remaining, but by 15k mi., they were finished. Still, good performance at an attractive price. I would have replaced them with another set but in the interim, Yokohama discontinued them in the correct sizes...

Happy Motoring!... Jim'99

So then, Trigemk, or anyone else. How much did you pay for your Bridgestone s03s? Oh, and did you guys order them? or just buy them from a local shop?

My Yok's are just about toast at 11k miles. Lots of tread in some place, but bad wear in others.

They also cupped at like 5k. I ran OEM tire pressures, but I do all my tire pressure adjusting at temp next time.

One had a nail in it, so I am just using them up:) and deciding what to get.

Replaced the original Conti Sport Contacts on my 2000 w/the Goodyear F1 GS-D3 XL's. I am very happy with about 1K miles on them.