most people here suggest only a 2 wheel alignment. why not a 4-wheel? are the back tires permenantly positioned or something? i ran over a island with my rear tire. does this mean i don't need to get that aligned? please help.

 

bump

 

who suggests 2-wheel??

 

i did a search and most members said 2-wheel is sufficient. so am i to assume that 4-wheel is the way to go?