Stock suspension TRD PRO questions

Hey everyone couple quick questions concerning the original Fox 2.5 lift in this 2017 TRD PRO.

1st- I've seen threads where people are using, 3/4 top spacer on the front struts to achieve true 2.5 lift, with an add a leaf in the rear? can someone explain?

2nd- What is the biggest size tire i can mount on these 16's without lifting it more, cant really afford an extensive lift at this time. But would like to put some bigger/beefier tires under her.

3rd- wheel spacers. can someone explain?

Any further information's or pictures would be really helpful!!

 

Out of curiosity, have you tried using the search function?

 

I was honestly hoping someone with a TRD PRO would see this and say i run ______ and i have no issue's...