My first tab and im not sure if its absolutely 100% correct but it sounds good to me. 
Great transformers tune, sounds awesome with distortion.
Doing slight palm mutes on some notes sounds good, gives it that heavier sound.
/ = slide
h = hold the note

Drop D tuning

the intro part is played again 2 times in the middle of the song.

e|---------------------------------------------------------------------------|
B|---------------------------------------------------------------------------|
G|---------------------------------------------------------------------------|
D|-|intro:------------------------|------------------------------------------|
A|--5h---/-1h---/-8h---/-3h---/-5h---5-7-8-0-1h---/-10h--5h--5-7-8-0-1h--/-8h|
D|--5h---/-1h---/-8h---/-3h---/-5h---5-7-8-0-1h---/-10h--5h--5-7-8-0-1h--/-8h|


e|---------------------------------------------------------------------------|
B|---------------------------------------------------------------------------|
G|---------------------------------------------------------------------------|
D|---------------------------------------------------------------------------|
A|-5h----5-7-8-0-1h----7-10h----5h----5-7-8-0-1h----6-8h----5h---------------|
D|-5h----5-7-8-0-1h----7-10h----5h----5-7-8-0-1h----6-8h----5h---------------|