Wheel size and the new GT6 patch

[Ridox2JZGTE]

Watch this informative video with English sub, make a note of changes made on Nissan Fuga when implementing 19 inch wheel size + Z33 comparison 18" vs 19"

 

[jblackrevo9]

Changing wheel diameter doesn't do anything to the handling even in real life, it only changes the gearing and the linear grip (acceleration/braking) slightly. The increase in diameter gives the tyre a longer contact patch allowing it to potentially handle more load but the increase is slight unless taken to the extremes of tall walled drag tyres. However, changing the wheels in GT does not make the outside diameter of the wheel any different (rim changes diameter/tire remains the same) so that effect will not be seen.
What does change is the size of the tire side-wall, as you fit larger rims this shrinks which in real life would have the effect of stiffening the side-wall and allowing it to potentially handle more lateral load before distorting. The downside of this is that the tire will absorb less shock when driving over uneven surfaces so the ride and handling may be compromised in these circumstances.

Tire simulation is basic at best in GT, you can't alter tire dimension or even pressure, they warm up and wear as a single unit rather than in bands, camber doesn't work and toe is overly effective, the chances they modelled side-wall flex (which is something not a lot of PC Sims do) are a million to one.

Thank you...I over thought the situation.

I completely agree with you with the camber and toe which is why I don't mess with it too much on my tunes.

 

[DolHaus]

Thank you...I over thought the situation.

I completely agree with you with the camber and toe which is why I don't mess with it too much on my tunes.

0.0 camber is best 90% of the time so set it and leave it. Toe is very important though and shouldn't be neglected, start at 0.00 on both ends and then experiment and note the effects when adjusting front and rear separately, there are a lot of positives to be found but if you add too much you can completely alter the characteristics of a tune and overwhelm/drown out other settings so try not to go wild unless you have exhausted all other tuning options. 👍