OP: I suggest using the sticks for brake/acceleration and steering because they allow finer, more precise inputs of partial brake/throttle, or rolling on the throttle, or having a small steering angle, etc. Also I have noticed that the brakes are *much* more effective if rolled on (applied gradually), instead of slamming them on 100% all at once. I have also noticed that if you're swinging wide into a turn, most cars will turn more if you back of the gas a little, which not only slows the car a bit but also transfers weight to the front axle, giving the front tires more grip. So if you enter a sweeping turn a little too fast and it looks like you might not remain on the pavement at your current angle, try letting off the gas for a moment while keeping the wheels turned, see what happens. It's not always necessary to brake. Finally, setup the controller to allow access to the RA menu while driving. (I think it means real-time adjustment.) Do some searches here in GTPlanet and you will find information on adjusting TC, ASM, brake balance, etc. on the fly (while driving).
These are not DS3 tips as much as general driving tips, but these things help me with good lap times on a DS3 controller. Most importantly, have fun! It's a game.
These controller extenders are a huge improvement. They are about $12 on Amazon. Highly recommend.
YES! Those joystick grips are a huge help. I use the "Grip-It" types (with the froggy) and have them on all of my controllers. Just be sure to keep them (and your fingers) clean or they will eventually get slick and need to be cleaned with detergent.
false - check the time trials, wheel is the best option.
A wheel setup certainly helps some people drive faster in this game, but that does not mean there is anything wrong with using a controller.
I *love* GT5, and I can afford to buy 10 wheels right now. But I don't have a wheel because this game must remain a hobby and not an obsession that destroys all of my spare time. Buying a wheel would most certainly be the breaking point for me... I'd have to buy the seat, and a racing suit, gloves, a helmet with internal speakers, and God only knows what else! Besides I am fast enough with the DS3 and I'm having fun, which is the most important thing.