Go Karting, Wheel Spin & Tire Pressure Survey

[GoDadGo]

Hey Gang,

1. What pressure have you all found to be the best for getting the car to hook because tire spin is very easy to come by at only 1/3 to 1/2 throttle?
2. I'm into some Extensive Go Kart Testing and am running 21 pounds of pressure on all four corners.
3. Tires are NITTO 555's with 245/45-17's up front with 285/40-17's out back and have the 3 links set up and standard Red Koni's from Factory Five.
4. I'm running a Mighty Mouse 383 SBC with 3.73's out back and am likely making in the 440-460 HP with torque numbers in the same range.

Steve

NOTE: My engine specs are very similar to the Edelbrock Signature 383 with a little bigger head, a little more compression, a better breathing single plane intake, similar cam specs and the exact same carb.

http://www.jegs.com/i/Edelbrock/350/46213/10002/-1

https://youtu.be/aYq4PubfeMU