Well I have taken the plunge and ordered 4 of the new Kumho Ecsta KU36! Officially it says:
Designed for SCCA racing that demands high Uniform Tire Quality Grades, this incredible tire delivers unrivaled dry grip with split-second steering response, and its unique footprint is designed to deliver consistent handling performance at high G-forces.
Features:
1. Low void asymmetric tread pattern with circumferential grooving for high cornering grip.
2. Ultra fine carbon black compounding for maximum traction.
3. Ultra wide tread contact with highly rounded shoulders for optimized footprint shape during high lateral loads.
4. Developed for quick autocross warm-up while maintaining race track durability.
5. With a Y speed rating, the tire delivers an optimum run temperature of 205 degrees Fahrenheit.
£117.70 each from Mytyres (which includes VAT and delivery) seems like a real bargain. We'll see!
Once I've got these tyres fitted and scrubbed in I WILL do Crail and Knockhill again.