I'm assuming you're trying to say 0.7 or 0.07?
Anyway, toe in the rear helps stabilize the rear end at speed, making it more driver friendly to low skill drivers (most 370z owners, though likely not most people on this forum necessarily).
Also, and on this point I am not 100% clear as to how it relates to our
rear suspension specifically, but in most independent setups, toe is added or removed under compression.
For example, in the front, toe is added on compression, so it is common for "racers" to spec toe out on the front so that under braking into corner entry, your wheels are as straight as possible.
I think the inverse may be true in the rear. That is to say, under compression (acceleration) toe is removed (meaning toe
OUT is
added). If this is the case, Nissan would spec toe IN because it would serve twofold
- Add stability when cruising at speed
- Straighten the drive wheels out under hard acceleration.
Again, I could be wrong on that second part, but for sure, it adds stability at speed that isn't necessary for a skilled driver on a race track.
EDIT: I will say for completeness sake, it also helps with bump-steer in the rear, as it tries to push the wheel towards the car's center of gravity when one or both wheels are "upset". Another thing a "racer" will want to fine tune for themselves to suit their driving style.