Hints:

Unlock Super License:
     First  earn the A, B, International A, B, & C Licenses. The Super
License will now be available.

Unlock Event Synthesizer Race:
     After  earning  the Super License(see above), you will be able to
unlock the Event Synthesizer Race.

Easy Start:
     This  game is very different than GT, you don't win Cups anymore,
you  have  to  race  tracks  one  by  one. Also, most of the races are
limited  to  a  certain  HP.  The  first races you should take are the
Sunday  Cup  and  the  Clubman Cup. Buy a used R32 Skyline and tune it
enough  to  have  a  lot of HP. Race all of the races and keep gaining
money.

Easy Money and Cars:
     First,you must have at least 300,000 now and an I-A liscense. Buy
a  Mitsubishi  3000GT  MR-Twin  Turbo  and  tune  it to the max. Go to
Special  Events  and enter the No#1 Tuned Turbo Car World Cup. All the
races  here pay 50,000, but are kinda hard. Pick the one with the Test
Course.  The  cars here are unforgiving so make sure you tune your car
to  go  to at least 210 MPH. Race 3 consecutive times and you will win
the second ultimate car the HKS R33 Drag. Which sells for 250,000.

The Ultimate Driving Machines:
     After  you  have  established  atleast  4  million,buy the Suzuki
Escudo  Pikes  Peak  Version  which  sells  for  2,000,000.This car is
monstrously  powerful  and  quite easy to handle at high speeds.If you
drive   well  enough,you  can  race  any  race  and  defeat  all  your
opponents.This  car  will  whip the competition in the GT World Cup so
have fun.

Getting money:
     Win  the  4WD Challenge at Laguna Seca to receive a 618 hp custom
car.  Take  that  car  to  the  Tuned-Turbo  Challenge  and  enter the
Test-Track race. You will win $50,000 and a car worth $30,000 for each
3-lap  race that is won. The secret to winning on the Test-Track is in
the  corners.  Stay  smooth and off the walls/grass to pass the faster
cars.  Do  not  let them block your car, and drive defensively once in
the lead. You will also need licenses to race.

     Get a brand new Nissan Skyline GT-R Vspec (R34.J) '99 and tune it
to  the  max.  Then,  get  an  International A licensee. Go to Special
Events,  go to Line Up 4, choose Tuned Turbo Car No.1 Race at the Test
Course.  Finish  in  first  place to get $50,000 and a Skyline that is
worth  $30,000.  Repeat this until you win a 250,000 Mine's HKS 180 SX
(racing  modified). Repeat again until you win a 13,750 Mines Lancer V
(racing modified). Note: You do not have to use a Nissan Skyline, just
a powerful and fast car.

How to get a viper GTS-R:
     Start  game  and  win enough to get a car with 591 horsepower and
then go to endurance races and go to Apricot Hill 200km. You must have
internation  B licence and win 1st place and you will receive $500,000
and the viper GTR.

Obtaining licenses easier:
     At  the  main  menu  on  simulation mode go to the last selection
(Transfer  or  Communication).  You  can  load  your licenses from the
original Gran Turismo from here.

Easy first place in arcade mode:
     Purchase a "special" model car on the simulation mode disc, which
costs  approximately  500,000  to 1,000,000 credits. Save the game. On
the  arcade  disc,  choose  to  load  the  simulation  mode game. When
choosing the class of car in a race, choose "home garage" and use your
new car.

License Tests Demonstrations:
     If  you  are having trouble getting past the License tests, watch
the demonstrations. These demos are much better than the ones in GT so
watch  the  speed  and the turning and braking times. This should make
your license woes disappear.

Double Your Cash and Garage Space:
     It  is  understood  that your garage in Gran Turismo 2 only holds
100 cars at a time. Lets say you have 100 cars and $10 million credits
Save your game play twice on two differants memory cards. Use one card
as  your primary garage and one as your secondary garage. Now take the
first  card  and sell off all the lower cars then safe agian. Now take
the  secondary  card  , load up and sell all the higher cars then safe
again  on  the secondary card. Keep your best race cars on the primary
and all others on the secondary. You have now double your garage space
to  200  and  have doubled your credits with 10 million in each , plus
what  you got for the sold cars for a total credits of 20 million plus
whatever  earned  on  sold cars, split between the two garages. If you
need  to  transfer  a  car  from one garage to the other, use the data
tranfer  mode  off the main menu by buying the cars off each other You
will  never  lose  the money for you own both garages. When one garage
fills up, do it again.

Extra HP in HP limited races:
     On  the simulation disc you can use a car with up to 5 more HP on
the  races  (with  limited HP). Go buy a item such as race mufflers or
computer,  but  do  not equip them on the car. Before the race go into
settings  and equip the item. The computer will allow around 5 HP more
than posted.

Get the elusive Lancia Stratos:
     To get the rare and very futuristic looking Stratos, despite that
it was made in the 80's, you must beat the 200KM Apricot Hill Endurace
Race. You may also get a [R]Viper GTS-R.

Car wash glitch:
     There  is a mistake at the part where you wash your car. When you
go  wash  your  car,  it says it costs 5,000 credits to wash once. But
it's really costing you only 50 credits.

Quick cash:
     If  you haven't already, get a good used car to start with, win a
few  of the easy $3000 and $4000 races and soup up your car so that it
runs  at  just under 295 Horses. I chose the '94 Mitsubishi FTO GR(J),
won  some  of the easy special events and souped it up a bit. Once you
have  a  semi-decent  car,  and after you have aquired your B licence,
heed  back over to the Special Events and enter the FF Challenge. From
there, choose the Tahifi Road Race (A purse of $5000 if you win). Now,
you'll  have to race this several times, but if you keep wininng, once
you  get  around  $40K  saved,  you  will notice you get a "Bonus Car"
awarded  which  is  Mugen Accord SIR-T(J). This car can sell for about
$7000.  If  you race the same race again and win, you get ANOTHER one.
Keep on racing and collecting these cars.. that makes a total purse of
about $12000 per race which ain't to bad for a 2 lap "B" license race.
It may help you build up some cash to totaaly supe up your old car, or
buy that elusive new car you have always dreamed of.

Quick cash:
     Race  and  win the last of the "Midship Challenge" races (Special
Events  - first page, bottom left corner - the last race with a 591 hp
limit)  with  any  high  powered  car  of  the "MR" type. You'll get a
[R]GT40  Race  Car. If you enter the same race once more with this new
car  of  yours,  you'll notice that you can't be beaten (Well, almost.
Strictly speaking, you can loose with any car).

     The beauty of this scheme is that, as I've explained, once you've
won the race once, you're sure to be able to win again. And you'll get
a new [R]GT40 Race Car every time. Did I mention that the race is only
2  laps?  And  that  a  [R]GT40 Race Car sells for 250,000? You see my
point, I'm sure.

Quick cash:
     First  get  your international B license. Then buy an Audi S4 and
max  it  out.  Make sure you only have the stage 3 turbo equipped. The
stage 3 turbo gives your car 534hp. Then go to the GT Euro League. All
of  these  races  are a 591hp limitation so you will be alright. There
are three races and each one gives you 10000 for first. Since the Audi
is  4wd  you  should  have no trouble winning. As you win each one you
recieve  a  race  vehicle  ie:  Zexel  Skyline.  Each vehicle is worth
250,000  credits when sold. Each race is three laps but if you win all
three and sell the cars, you can make 780,000 credits in one sitting!

Get a lot of money:
     Go to race with a rally car, go to rally events and choose tahiti
road.  Then  you  take  the  2nd race mode and you dont have to take a
really  fast car but you always win. You get the price of 10.000 every
time you race (be sure you have dirt tires).

Mad Cash for real:
     First  go buy the Suzuki Escudo Pikes Peak Version if you haven't
already bought. Then go to the GT all stars Red Rock Valley race. When
you win the race you get 50,000 credits.the car you get is a TVR speed
1 which is worth 500,000 keep on repeating and win some big bucks.

Quick cash:
     Get  a decent car with under 390HP, I chose a Chevrolet Camaro SS
97'  with  311HP  then  race  it  in  the  Wagon Showdown in the super
speedway race. Its easy to win and as well as the $6000 prize, you get
a  Mugen Accord Wagon worth $6250, making a total of $12250 for a race
which should take under 2 minutes.

Money hint 2:
     I  used  the  RUF  CTR2  on  the  Grand Touring Car Trophy Entry,
Midfield  raceway. For first place you will receive $30 000 plus a car
worth  $250  000. In about 3 or 4 of these race you will get well over
$1.000.000.

Gigaspeed:
     Start   the   arcade   game.   Goto   to   time   trial.   Select
"Motorsportsland"  (it  doesn?t  matter  if you select reverse). Start
driving the track and you will notice a small hill in the left side of
the road (if you selected reverse it will be on your right). Stop your
car to the U-bend. Accelerate towards the hill so that the "wrong way"
sing  appears  (if  you selected reverse the "wrong way" sign will not
appear).  You  must  have  50 mph speed (app. 80 kph). Repeat this few
times  and your car will go trough the hill instead going over it. The
"out  of  course"  sign  appears. Now you can drive as fast as the car
allows  you to, there are no walls so you can drive off the screen. My
personal record is 312 mph (app. 500kph).

Easy money & cars:
     First, Buy a cheap 207hp used car. Go to the special events. then
go  to  historic  car cup. Race at Tahiti road. Finish first ten times
and  get a free car. Sell all ten free cars and you should end up with
around $100,000.

Very easy money:
     Get  100,000  credits  and  go to the Mitsubishi part of the east
city.  Buy  a 3000GT VR-4 Turbo. Go to tune and go strait to Turbo and
get turbo kits. Go strait to stage 4 and buy it. Your horse power will
go  up  to  around 620hp. Then, go to Special Events Races. Go all the
way  over  to  the  Tuned  Turbo  Car NO.1 Cup. Go to the test course,
finish  first  twice and you now get 100,000 credits. NOTE: to get the
100,000 credits to start with, Follow "Easy Money and Cars."

There's Something About the Licenses:
     Have  you  done  all  the  races  and  still  the  game says your
completion  is  about 98%? Well, the license tests count as races too.
It  sound  impossible,  but  you  must get gold for every license. you
don't  get  money, but you win some excellent race cars (like a FTO LM
edition,  Chaser  LM edition, Del Sol LM edition, and two others) When
finished, the game should have a 100% completion.
     Note:  Earlier  versions  of  the  game  have  all gold for every
license  to unlock Drag Racing, found after the Event Generator option
at the GT series.

How to get 550,000 In 5 minutes:
     First,  you  must have the crotch rocket also known as the Escudo
and  an  IA license. Enter the All-Pro Special Event and go to the Red
Rock  Valley race. Next, before the race go to car settings. Lower the
Escudo  as far as it will go, and drop the suspension rate between 4.0
and 8.0 for each wheel. Also, put the downforce to 53 in the front and
85  in the back. It sounds insignificant, but this helps the car blast
around  the  first  hairpin at 220+ mph, warning, the Escudo will slam
into  the  wall, dropping the speed to about 160-180, and may induce a
spin. Another note. if you're racing against a Lister Storm, make sure
you  don't  rear-end  it.  It  is as slow as molasses compared to you.
After the race, you win a TVR Speed 12 (which sells for 500,000) which
you  can  fully  upgrade  to  annihilate any race with an unlimited HP
requirement.

     My  personal  record for Red Rock Valley is 54.876@226.87 mph for
the lap record and 4min, 52.211 for the total time.

Easy Cash:
     You  don't  have to sell the TVR Speed 12! Instead you can use it
to win the N/A Tuned races easily. the cars are horribly slow compared
the  Speed  12.  (for  example, you have 807 HP to the rear wheels, or
about  3X  as  much power they have). The races pay 50,000 a pop, plus
about  11,000 for the cars. A note about the Speed 12, downforce, zero
camber,  and big gears are its and your friend.put a lot of downforce,
tire on the road, and top end to keep the car rear in check.

Escudoes Are For Dirt:
     You don't need an Escudo for super speed and road race dominance.
Go  to Toyota and buy the GT-One Road Version. Tune it to the max. You
now  have  a 975 HP Japanese car that can smoke an Escudo in top speed
and  handling  (the  escudo's handling can be unpredictable, while the
GT-One  drives  like  a 4WD car; very stable) Also, the best part, you
save over 600,000 credits!

Rally Car Glitch:
     It  seems  the rally car all have 295 HP. Not! for example. Buy a
"295"  HP  Subaru Rally Car, then check you garage. choose the Subaru.
To  your  delight  the car now produces over 400 HP! essentially every
rally car (and new car for that matter) increases in HP after purchase

Escudo Glitch:
Warning! This can affect your saved game!! 
     First  buy  an  Escudo. race the first Sunday cup race. Make sure
you finished 2nd. Go back to your garage. Put the Escudo on the top of
your  garage list, and make sure it wasn't washed. Then, save the info
on a memory card. At the main screen. let the demo play of the classic
car  race.  When  the  demo  finishes.  save the game again on another
memory  card, then save again. On the 2nd save, let 10 blocks light up
then  turn  off  the  PlayStation. Turn it back on then load the first
game.  then  buy  the  escudo  on the 2nd game using the File Transfer
option.  The  2nd  Escudo  should  have about 6,000-40,000hp and weigh
about  600lbs.  You  can  test it at the test Track. You can get about
1000mph  with  it.  However,  you must reload the game, since the game
erases  the  cars  from your garage. The erasure isn't permanent. Also
this may have slight glitches on the races, some of which make the car
undriveable.  This "SuperEscudo" is a blast to drive! Note! The effect
only works on bugged memory cards, such as ones made from Nuby.

Super 180SX:
     To  get your Drag 180SX to round the corners at the Test Track at
245mph, do the following:
     1. drop the suspension rate to 2.0 front and rear.
     2. Max out the down force at the front of the car and Minimize it
atthe rear.
     3. Put both damper settings at 6 and stabilizers at 3
     4. make sure the car has Super Soft Tires equipped

Driving Instructions
     1.  Enter  the  corner by attempting to dive into the grass while
braking.  If timed correctly, the 180 will drift up the track slightly
and  stick  to the track. the closer you are to the inside, the faster
you  can  make  the  turn.  Unfortunately,  it wont work if you follow
closely  behind another car. If the car is on the outside of the white
lines, back off throttle until you get to about 210mph.
     2.  When  the  banking backs off, watch out; the car tends to get
sucked into the grass. back of steering just a tad

Most profitable race in the game:

Red Rock Valley in Gran Turismo All-Stars
Profits:
50,000 credits plus a 500,000 credit car.
Average Lap time: 
1 minute per lap for 5 laps.
Fastest accelerating car:
Susuki Escudo Pike's Peak Version
Fastest car:
HKS Drag
My top speed: 281 mp/h
Using the Slipping Effect with a buddy with the same car works well. 

Give an 101 % effort:
     You  may  often  read that one of gt2's glitches is that you cant
complete  100%,  untrue.  If  you  have successfully completed all the
races,  including  the manufacturers cups, won all the races from easy
to expert on arcade mode disc, and also you must have obtained all the
liscences  inc  special  you should be sitting at about 98 %. Now save
and  restart  the  Playstation,  when it asks you which language click
German/Deutch,  this  changes  vauxaull dealership to opel, now simply
complete the manufactures cup and you should have over 100%.

Neverending straight:
     On  both  the  Laguna  Seca and Motor Sports World tracks you can
drive  in  an  open void. To do this on Laguna Seca head down the home
straight  coming  up  to  the  hairpin, head straight towards the thin
strip  of  concrete  and  hit  the wall about where the blue and white
tyres meet the wall, if done right you should be able to worm your way
left and right untill you are off the track completey. But if you want
to  get  a  500  km  top  speed I suggest doong it on the Motor Sports
track.  Do  a  lap  and  when coming to the last hairpin cut it on the
grass  and  head down the home straight, it should come up with "wrong
way'  or  'off  course'  head  straight  at the wall at the end of the
straight and you should go right through it.

Get 135,000 in one race:
     First you need a 394 hp car then you need to go to 80s sports car
cup.  Then you go to Tahiti road and get 1st place. You will get a car
worth 125,000 and all you have to do is get a couple more cars and you
will have $1,000,000.

Horsepower Boost:
     Unlike  Gran  Turismo  1,  in  Gran  Turismo 2 you can boost your
horsepower  by  simply  not  equipping  the performance chip, muffler,
turbo  kits,  and intercooler when you buy it and equip it when you go
race  or  test  it.  It  will  help boost your horsepower 5 to 15 more
points.

Fast money:
     All  you need is a I-C license and a good car under 394 HP, I use
a  jaguar xkr coupe. Buy everything but keep it under the HP limit. Go
to special events "Grand touring car trophy" section. the top race you
get cr 10,000 for first and the caryou win sell's for cr 125,000

Easy way to get a lot of money:
     Go  to Suzuki's special car section and get the Escudo Pikes Peak
car (It costs $2,000,000 but it's a good investment!!!) then enter the
third race of the Gran Turismo All Stars section, it's on the 4th page
of the special events section. You will be driving a 900+hp car but it
handles  preety  good so you will win easily. It's a 5 lap race and it
shouldn't  take  more  than 5m:20s to complete. After you win the race
you will get $50,000 and a car that you can sell for $500,000. You can
also keep the car you win and paint it. It has a wicked paint job! You
can do the same race as many times as you like and you will always get
the  same  car.  Note:  You  should do a couple test runs first so you
could get comfortable handling the speed and turning etc.

Quick cash:
     Once  you  have  obtained the I-B liscense, buy a decent car with
under  394  HP  (I used a tuned up Mitsubishi Lancer GSR VI). Once you
have  done  this, go to the 80's Sports Car Cup, under Special Events.
Go to the fifth race in this cup (Tahiti Road). Tahiti road is an easy
track  to win at, and every time you win, you recieve 10000 cash and a
Nissan  Skyline  worth  125,000  credits.  You may not want to sell it
though.  It  has  555  HP and a Maz Speed of 190 MPH. Consider winning
this race multiple times, and selling all of the cars but one.