Originally Posted by
seth556
On the Xray website they suggest the +2 holders would be good for low traction but I would think it'd be the opposite. From what I can tell they just raise up the rear roll center. A higher roll center just decreases traction. You're also moving the arm closer to the diff outdrive so you're decreasing the natural tendency of the car to squat under acceleration. If anyone has had a 22 and raised the tranny for more rear bite, you'll know what I'm talking about.
For spares, maybe some wing mounts, ball cups, and some arms. Doubtful you'll go through many arms though. The others will break with a really hard hit.
I have found that you need to decide between forward or lateral traction. High roll center helps a lot for having great forward traction.