Aficionado 
Purchase or win any 5 cars for your garage
You should get this when you recieve your last pink slip car or before if you have purchased any more cars before. Just buy 5 Tier 4 cars if you want it early.
Keys to the City
Unlock Port Crescent in Career
This is the final part of the map that you need to unlock and will come about 70% through the career.
Branching Out
Unlock Sunset Hills in Career
Just unlock this area of the map. It will come when going through the career.
Hired Goons
Take out all 'Goons' in Career
These are the missions after you took out Rose and G-Mac, they are the last remaining Goons that you have to defeat so just take out their car.
Unstoppable Force
Avoid 50 Road Blocks in Career
This should be gotten when playing naturally. Don't ram through the blocks but there should usually be a gap between the cars, either on the left or right. Go that way and you would have avoided. Do this 50 times for the trophy
Wasting Tax Dollars
Get $100,000 Cost To State in a single pursuit and evade
More difficult than it sounds, try going for a Cost to State event which is about Wheelman 13 or 14, as these would have more cars chasing you. Don't take cars down individually its better if you look on your GPS and see where the closest pursuit breaker is (The yellow caution signs). Make sure a lot of cars are following you and with every pursuit breaker you could get 7 or 8 cars. Do this a few times and you will eventually get $100,000.
Spiked Punch
Avoid a spike strip in a Pursuit and successfully evade in Career
When you have avoided a few road blocks in a single pursuit you will hear that they will be laying down spike strips. Listen carefully to where they say it is (Left or Right) and go the opposite way slowly to be safe. The idle cars wont move until you pass them so dontworry bout them.
Lose the Fuzz
Successfully complete 5 Pursuits
Easy and one of the first trophies that you'll get pursuits can last from 20 seconds to over 5 mins and get harder the more time spent in one. Just turn a lot. Dont go straight down a road they'll know where you're going
Scrapheap
Disable 100 Police Vehicles
Do some cop takedowns and you'll eventually get it. You can average 5-6 takedowns in a single pursuit if you have a good enough car.
Nothing Stock
Discovered all 3 Tuning Shops in Career
Unlocked as you go along, just play career. They, on the GPS are called Parts Shops.
Own The Road
Dominate 25 Events in Career
This is another easy trophy like most of them. Just dominate 25 events. I would worry if you havent done this before the career is over. Some races you'll get by luck and skill. Just play and get better. To dominate a race you have to win the race and also complete it under a certain time.
Love Thy Tires
Avoid 12 Spike Strips total in Career pursuits
This will come naturally, hear out for when the police are putting down and you could get at least 3 in a single pursuit
Among the Best
Won 25 Ranked Multiplayer Events
The easiest way to do this is in Cops and Robbers as your in teams and have more chance of winning. Just win 5 times and dont let your team do all the work. Or you could try and boost this so look in the boosting thread
Notorious 
Finish 119 Multiplayer Races in any posistion
Normal Method - Just race. DNF dont count towards this so you actually need to race. This is a very time consuming trophy.
Quick method - Put on Cops n Robbers, and stay idle, read a book watch some TV, go to sleep, these count and their is no posistion. It counts matches not rounds though. This is the easier option and I am sure most people would prefer to do it that way.
As of late the servers have become pretty bugged so you are more likely to get disconnected now, check back to the game regularly if your doing the quick method.
Retired 
Finish the Career Story
Just play the story and defeat the last person (No Spoilers here) and the gold trophy will pop up
Completionist
Dominate 100% of Career by beating all the track records.
Many people are getting confuzed with this. Its misleading saying 'Dominate'. You do not need to dominate anything just win every single event and make the Overall Completion 100%, Not Career Completion. All races, jobs, pursuits, cop takedowns etc count towards the percentage so just win every single event and don't worry about dominating.
Most Wanted
Successfully Complete 50 Pursuits
Easiest out of all 3 Golds. With all Cop Takedowns, Cost to States and random pursuits during races, you shouldn't have a problem getting this one.