Easy Win at Talladega and Daytona:
Draft another car and bumpdraft them. When on straights, press [Boost] to pull ahead. Keep steady when using the boost; otherwise the car in front of you will spin. To win you must boost around the car in front of you out of turn 4. You will win the race easily.
Upgrade you car to it's max performance. Every time you go down the backstretch, hit the boost until it is gone. Do this in every lap and you will pull away from the pack.
Easy win at Auto Club and Michigan:
Max out your car's performance. While going down the backstrectch, press [Boost] until you are either out of boost or are at before the turn. You must slow down going into the turn because the tires will not grip unless they are new just off of pitroad. Continue this for the entire race and the pack will never be able to catch you.
During offline races there is a thing called "Focus". When online, the "Focus" becomes a "Rolling Pitstop" and will not slow you down. It is used to keep everybody on the track and not on pitroad making repairs. Note that the "Rolling Pitstop" can only be used when the wrench it lights up on the farthest left-hand side of the power-up meter.
FTW! - Win your first career race.
Welcome to the bigtime! - Start new career as a rookie.
You are now a Pro! - Qualify for The Sprint.
Droppin' The Hammer - Use Hammer 100 times in singleplayer.
Eyes on The Prize - Use Focus 100 time in singleplayer.
Millionaire - Make your first million.
Sellout - Unlock your first sponsor.
The Chase is On - Qualify for The Chase.
Full Throttle - Max out a car's performance points.
World Champion - Complete a full career.
Everyone wants a piece of you - Unlock all sponsors.
Demolition - Earn over 9000 points in Derby mode.
Paint Bucket - Unlock all paint styles.
Pole Position - Qualify first for a race.
Online Racer - Play your first multiplayer match.
"This is it, this is what it's all about." - Earn all Bronze, Silver, and Gold trophies.