Quote:
Originally Posted by synolimit
How much caster is good caster?
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Go toe in on the front(dynamically stable but slower turn in)
and add more caster - +6-7 to start.
The caster will balance out the turn in sharpness and the toe in at the front is more dynamically stable. This is debatable on street setup, but for race setup it is the norm. For street the toe out in front is kind of a gimmick but it works and is safe at speed less than say 70 mph. At high speeds toe out in front is not stable-a wind gust can basically **** your steering up. Hard to explain, but basically picture a 40 mph gust of wind hitting the right side of your car-it will instantly add toe out, if you are already toed out, then for a split second your left wheel is pointed left and your right wheel is pointed way right. This will push you into a bad understeer situation.
Compare that to having toe in, on the wind blast side you will just get closer to 0, it will slow you, but it won't spin you.
At low speeds and not in a hurricane, butt dyno tells you toe out is fast, and yes it is responsive and fun. At 100 + mph and a large rock or blast of wind, it's a spin out since your car will not hold a straight line and will steer one way or the other and cause an over correction. That's the idea anyway.