I am learning this song by request.  It is pretty repetetive.
Just listen to the recording for timing.

Life Is A Highway
Words and music by Tom Petty

Standard Tuning
PM      palm muting

Intro/Chorus (w/ distortion, x2 as each)
e[--------------------------------------------------------
B[--------------------------------------------------------
G[--------------------------------------------------------
D[-7--5--3--3-----3--2-----------3--2--5--5---3--2--5--5--
A[-5--3--1--1-----1--0--3--3-----1--0--3--3---1--0--3--3--
E[----------------------1--1------------------------------

Verse (w/ distortion) Play this twice     And this once (Pre-chorus)
e[-----------------------------------]-----------------------
B[-----------------------------------]-----------------------
G[-----------------------------------]-----------------------
D[-----------------------------------]-7----5----3-----------
A[-3-3-3-3-3-3-3-3-------------------]-5----3----1----5------
E[-----------------1-1-1-1-1-1-1-1---]----------------3------
  PM....................................................

Chorus

Verse

Pre-chorus

Chorus

Bridge (w/ distortion, x2)
e[----------------------
B[----------------------
G[----------------------
D[------3----7----5-----
A[-5----1----5----3-----
E[-3--------------------
  PM...............

Play the chorus twice after this, methinks

Pre-chorus

There's a brief rest after the pre-chorus.  Then continue playing the chorus an
additional three or four times

Done.

Song Structure:
Intro
Verse
Pre-chorus
Chorus
Verse
Pre-chorus
Chorus
Bridge
Interlude
Prechorus
Chorus

Peace.