Help choosing new track tires for the 993

[AMoore]

I got my Kumho MX tires in November.  They were inexpensive and they hold up surprisingly well for a tire with a treadwear rating of 200.  I notice no significant wear and have had them for three events, including driving to and from Summit twice and Pocono once.  I was not as impressed with the tire as Glen because I felt they had more sidewall flex.  This was remedied when I increased the tire pressure to well over 40 cold per the manufacturers recommendations.  18s are likely to have less flex. 

Nonetheless, I believe I am ready for more grip but still want a tire I can drive to the track.  Accordingly, I believe I will be purchasing Nitto NT 01s (100 treadwear rating).  They won't last as long as the Kumho but I don't drive the car in the street much.

Many R Compound tires manufactueres suggest that they be shaved and / or heat cycled. 

For comparison ( the lower the number, generally the softer and grippier the tire)

Continental Contiprocontact 600

Bridgestone Potenza Pole Position 400

Kumho MX 200

Kumho V 700 50

Goodrich G Force R1 40

Hoosier A6 40

Nitto NT 01 100

Pirelli P Corsa 60

Michelin PS Cup 80

Hope this helps.