How tuning mod works in GT5

[Z1-AV69]

But I did discover that ride height makes a huge difference and it is completely backwards to the real world. I began raising the nose on my cars and got more front grip. On a Miata I'm at like -5 front and -15 to -20 rear. Once I got the car to oversteer a little, the other "fine tune" settings began to work as expected.

It just seems to me that there are settings with "super powers" that override everything else. And until you get them right, cars will not respond to real world tunes.

No real-world racing experience over here, but regarding GT5 you make some very interesting points worth a further discussion.

[Edit:] After more precise testing, I have to take back my claim. At least on brake-distances ride height has now influence.

 

[Motor City Hami]

How does lowering a car reduce grip? Not familiar with that one in-game or real world.

 

[Z1-AV69]

Had to edit my post, sry. Your experience with more front grip after raising the nose brought me to a wrong theory.

 

[Motor City Hami]

I just think that the ride height thing is a game glitch.

 

[SS_1182]

Spring Rate Test:

Okay, so I just ran the Autobacs Garaiya '08 on Nurburgring 3 times. The first time I reset everything to default settings except the brake balance, so totally stock suspension. I believe the spring rates at default are 12.8F and 13.8R. The second time I ran it I set the springs to the extreme low, but in the same ratio. So the second run was 9.0F and 10.0R. The third run was done at the other end of the spectrum, with the spring rates at 18.0F and 19.0R.


I do believe that increased spring rates work to stiffen the car up. However, the changes I noticed were really far too minimal for such extremes. The car handled very well actually at 9.0F and 10.0R, and I noticed far less of an impact from FFB in my wheel when hitting the bumpers on corners compared to stock. At 18.0F and 19.0R, the car only had a slight increase in bouncing compared to stock, and it really wasn't even very much of an increase compared to the extreme softened spring settings. So we're talking about a minor change, despite a difference of 9.0 in spring rates, lol. But I didn't notice any change in FFB from road impact with the very high settings compared to stock. The car appeared to bounce a bit more, but I didn't feel any difference in the wheel.

I'll do this type of thing with the ride height next.

 

[SS_1182]

Ride Height Test:

I tried a lot of things just to see what would happen. My overall consensus on the ride height adjustment is that when all was said and done this is not a useful way to tune in or tune out over/understeer.

Ride height on the '08 Garaiya ranges from -15mm to +10mm. I first tried both front and back set to -15 to see what would happen.

**(First of all, despite what anyone says, until I see video proof, I will continue to say that bottoming out in GT5 does not happen. I have set up various cars with the softest possible suspensions and the lowest heights and I have never heard or seen anything from any car that suggests that it will bottom out.)

- At -15 for both front and rear, I didn't notice anything in terms of steering, which makes sense in that the heights for front and back are still balanced to the same ratio. However, the car left the ground 2 or 3 times where it normally wouldn't do so on the track. Is this GT's way of implementing bottoming out? Not sure, but the car definitely came off the ground. Other than that, I saw no disadvantage or advantage to using the lowest possible ride height at equal balance to the front and rear of the car.

- At +10 to both front and back, I noticed no change in the handling of the car whatsoever.

- At 0F and -15R, I noticed such a slight amount of understeer that I can't really even be sure that it existed at all. This was also true of oversteer when I set the height to 0F and +10R. In my opinion, the rear height alone does so little (if anything) to affect over/understeer that I don't find it useful.

- At -15F and 0R I thought there was a very slight amount of understeer, but again it was so small that even though I seemed to notice a slight difference, this would also not be useful in tuning in or out under/oversteer. At +10F and 0R I noticed no change in handling at all.


- At -15F and +10R there was still almost no increase in oversteer. It was so slight that I was again questioning its existence. * At +10F and -15R I finally encountered enough understeer to make me notice something. It was still on the minimal side, but it did at least make a couple of the turns more uncomfortable.

 

[budious]

I find many of the stock suspension (default fully customizable) setups on pre-tuned race cars in the game have fairly decent balance of the spring rate (given you don't weight modify, proportionally adjust but keep the ratio) but the dampers are far too stiff. Especially for Nurburgring I would begin by changing D.E. from 8/8 to 7/7 and D.C. from 8/8 to 6/6 etc, this would give a much softer cornering for such banked tracks, if under or over steer needed to be adjusted slightly then try the anti-roll bar setting first. (IMO ofc and to suit my driving style with a DS3 pad)

 

[Motor City Hami]

Ride Height Test:

I tried a lot of things just to see what would happen. My overall consensus on the ride height adjustment is that when all was said and done this is not a useful way to tune in or tune out over/understeer.

.[/I]

Did you have an adjustable LSD on the car? I think the LSD is he most powerful tune, followed by ride height? Looking for others to confirm or disprove.

 

[budious]

Did you have an adjustable LSD on the car? I think the LSD is he most powerful tune, followed by ride height? Looking for others to confirm or disprove.

The LSD does play a huge part in the handling of the car, especially during deceleration into corner, as for coasting with initial, and accelerating out of the corner. In fact, probably best to at least get a partial rough tune on the LSD before even attempting to compensate for over and under steer.

If you have over steer into the corner during hard braking causing the nose to spin inside you should try raising the LSD deceleration setting, else if it feels like it doesn't cut in enough then lower it.

Initial can influence mid corner handling, adjust until you have a sweeping momentum that doesn't swing too far outside, lower initial to compensate for under steer or raise to compensate for over steer.

Acceleration influences handling out of the corner, bottoming out the gas pedal and lighting up the wheels can send the car into a power over steer and off the track, so bump it up until you can kill the car's tendency to veer madly off course.

 

[Illopp00]

I think the reason ride height tuning has so little affect in the game is that even with the racing suspension the range of height adjusting is very small. On this R34 GT-R I have the racing suspension the max/min is -25 mm or +40 mm. That is enough to feel a small difference, but when you are adjusting the number only 5-15mm it is not noticable. In real life even the basic 'sport' spring kits and lowering kits are dropping 1.5 in (38 mm) straight off the bat.

 

[posimosh]

Japanese is written right to left so this would make a lot of sense