牙差, 珠差分别 ?

各位 c 兄, 唔好意思, 我係新手玩 awd, 想問問各位 c 兄:

1. 咩係牙差? 咩係珠差? 有咩分別呢?
2. 我想玩飄移, 要點 set 架車呀? 我見好多 post, 個個 c 兄既 setting 都唔同, 好多話咩都唔駛搞, 買 4 條 drift 呔搞掂, 真的嗎? (我自已住村屋, 訂咗張地毡諗住放喺花園玩, 所以想問問喺地毡玩既 setting)
3. 個売對架車又有無影響既呢?
4. 齒輪比要點 set 先可以飄呢?
5. 轉角杯駛唔駛換呀? 咩都唔換, 彈弓駛唔駛墊野呢?

多謝各位 c 兄...

1. 牙差inside with gear, 珠差 inside with steel ball.  they are different 珠差 for onroad car more smooth for conner.
2. basiclly change the tire is ok la
3. letter bit la

thx so much...