I actually like the Tokyo tracks. Partially because it puts everyone on an equal playing field as far a track boundaries go, there are no curbs to cut as you have to drive in-bounds the entire lap.
For those having a difficultly reaching or even breaking the 1:32 barrier, Here are some tips that may help you:
Start by using
@Pigems reference markers for braking, except begin your deacceleration one or two car lengths earlier. Don't worry too much about carrying speed into and through the corners. Instead, focus on slowing the car and COASTING to the apex (apex is marked with a little yellow sign on the wall). The coasting actually helps settle the car down a bit too. When you reach the apex, apply throttle with the main goal of a solid corner exit without hitting the outside wall.
Use forth gear for the majority of the track. The two times you will need 3rd gear are in the last sector. On the left turn exiting the last tunnel and the final corner. You may also find 3rd useful at the right hander exiting the second tunnel (turn 5?) to allow for more stability if you can't find the proper turn in point.
The two main reasons you will hit the wall on corner exit is from trying to carry too much speed into the corner and/or turning in too early. Even the slightest tap with the wall loses sooo much time. So run a half dozen or so laps with the coasting to apex mindset and see if it helps you out.
PS; my favorite car to drive around Tokyo is the 20 M. Ferrari.