Are your running standard 17" rims? If so you can put a 225/45 on the front and a 255/40 on the rear. Lots of very good tires in these sizes.

For a relatively inexpensive Rcomp tire that you can drive on the street for short distances I like the Nitto NT01; they wear well, have a lot of grip but like any Rcomp they need negative camber in the front--more than -1.0 deg. Hoosiers also need lots of negative camber or your outside edges will cord after a few events.

Personally, I like the extreme street tires like the XS, Nitto NT05 and Hankook RS-3. You can drive them to an event, can take the heat like a dedicated track tire, give you a bit less dry traction than an Rcomp but provide a controlled slide with lots of audio feedback before they let go. R comps--some-- just let go; grip, grip then no grip--and they need a lot of negative camber that you may not have. I drove the XS with -1.0 negative camber in the front end for nearly two years at track like Mid-OH and they wore evenly--the tire cycled out before the tread wore out.

Before I forget, get the most aggressive alignment you can before the track days start; your tires and savings account will be better off for it.

+1 Same as my experience.

When you go to R-comp's, you'll need adjustable lower control arms to get more negative camber otherwise.... http://986forum.com/forums/boxster-racing-forum/33823-need-more-negative-camber.html

Which Kuhmo model tire did you install ? All 4 ?

i just got a set of 4 new Nitto INVO on my Yr.2000 Boxster S.

I'm using 18" 987 Boxster S wheel and now with front 235/40/18 Rear 265/35/18

My $0.02 worth... My first consideration for tires was "where I live". If I lived in Phoenix or San Diego, I would have gone with summer tires. I live in Ohio. It rains and snows here... a lot some times. So I went with all seasons, Continental Extreme Contact DWS. Did I sacrifice dry weather performance? Yes. But I extended my driving season and I can drive the car in the rain without worrying about every ditch I see.
My thoughts.

For your regular street drive you can not go wrong with the Pilot Sport PS2 they may not wear the longest 10 to 15 K but they are forgiving and hold like they are cemented to the road. Cotintntal Sport contact hold but they are easy to put into a slide. and the front end of my car pushes with them on.

I got a set of Hankook RS-3 for on the track they hold better than the PS2 in corners they are not a class penelty on AX because they are 140 dot rated. In a 30 minute session on track they could get a little loose in the last lap or 2. I am happy with them for my experience level.

Bumping because I'm looking for tires

^ you need to tell us what you are looking for in a tire.
and your wheel sizes would help too ;-)

Yep, all tires are a tradeoff. Typical priorities:

Wet grip
Dry grip
All weather/Summer
Ride comfort
Road noise
Low Price
Longevity

A very high grip tire will not last too long. An all season tire will give up some dry grip.

I think tires are last on his mind now. See http://986forum.com/forums/performance-technical-chat/36487-overheated-250-died-side-highway-left-stranded.html

Best of luck to you 986 Inquiry. Let us know how things turn out.