Custom wheels give all 4 tyres the same width.... changes grip and balance

There's no evidence that not having a staggered set up with custom wheels ruins the balance - as you put it. It's pretty much just graphical. I wouldn't worry about it.

 

Ironically, most production cars that are staggered, tend to get "squared off" for completion. Ie 350z...

Check the ford GT for what should be obvious if it gets squared off.

 

Guess i will be holding off on completely customizing my cars than. Thanks for the heads up

 

A very simple test to confirm this is to take a stock Cizeta V16 to High Speed Ring and then fit aftermarket rims. The long banked corner goes from understeer to oversteer

 

I wouldnt say ruin the balance. Some people prefer more front end grip and people should use it as a tool to do so. If you balance it with adding more rear downforce, you have yourself a faster car.

Good to know though.

 

Does this go for every rim or only when you increase size?

 

Will avoiding increasing the rim size prevent this? EDIT: Tree'd

This has potential disaster for Huayra users, the rear wheels are much larger than the front set.

I wonder if my Z31 constantly oversteers due to the custom rims.

 

Wow. I just hope this is a joke.

Does it affect ALL cars or just the mentioned? At least the Cizeta, the Huayra and F40 are cars that I never planned on changing the wheels on.

 

Except this doesn't add front grip, it reduces rear grip, which isn't the same thing. And it only effects cars with staggered tires, which usually have larger rear tires specifically because they need more rear grip. Finally, adding a drag inducing wing to counter act this loss of rear grip sounds like a formula for going slower, not faster.

I've tested a few cars so far and I think the OP is correct. After beating my head against the wall tuning my Stratos, I went back to stock wheels and the car drives noticeably better. Bizarre.

 

PD would not reduce the width of the rear tire. add a rear wing and increase rear downforce. And post your results

 

It's your theory. You're supposed to test it, not me.

 

Im not the one complaining. Your name is opposite lock, thats what normal racers use when they have oversteer...

 

I just tested the Cizeta V16 at High Speed Ring with my wheel(DFGT). Bone stock I managed a 1:13.116. With just the aftermarket rims I was able to hit 1:16.063. While there is more time to be found in both (I was a full second quicker with stock rims one lap till I messed up), it would take a greater driver than me to knock 3 seconds off the aftermarket time. With stock rims the car wants to kick the rear end out in slow corners, but is surprisingly stable at high speeds and actually understeers at speed. The aftermarket rim version requires very minute wheel adjustments and wants to kick the rear out at any speed. Lift-off oversteer is present in both, but with the aftermarket wheels it is much more pronounced.

 

This has nothing to do with complaining but a staggering production fault by PD. And if you do have a theory that would change or better it you need to come up with proof, not let someone else prove your theory.

 

Very interesting results thanks @Vagabond

 

Why don't they just give us a skid pad? (grumble, don't pay us nuthen, grumble dont give us no tools. grumble grumble)

 

Stock Size:

+1 Inch:

+2 Inches:

The size looks the same for each custom tire, but I cannot say for sure if the handling is different for each size.

 

That's just horrible... Why would PD do this? My enthusiasm for this game is decreasing day by day... I just hope this only happens in certain cars. At least the Cizeta is one car that I wouldn't change the wheels of.

 

Relax it does not look intentional, it just seems that someone goofed and when you install custom rims they do not just copy the width from the original wheels and instead copy the width of one front wheel for all four corners. Now time to draw PD's attention to this because honestly we should be able to choose the width of tires on many car models. Taller rims also increase unsprung weight, but taller front wheels can help with turn in on rear drive cars, in fact many cars run on taller front wheels than rear, S7 is one of them.
PD got to work with Yokohama Tire and I was expecting to see more indepth tire selection and more tuning choices for tires and wheels. Widths and size were the first things that sprung to mind, but we get size and no more options and a bug for increasing size which gives you four front wheels and a lot less contact patch. It's funny because I remember someone talking about PD not utilizing contact patch in GT6 but clearly they do else no one would have noticed the craptastic handling after getting 4 skinny tires on cars that come with fat rubber rears.

Is there a centralized thread that has a single list with problems in GT6 that need immediate attention? I don't see on stickied on the main GT6 forum. How many problems have we come across that actually mess up game play from a tuning standpoint?

 

Well if it's good if you are into drifting!

Silver linings and all that jazz.

 

Custom wheels did the same thing on some cars in GT5 also. This is nothing new.

 

I know over the past few years a few of the Lemans LMP's have run wider front tyres then rears, could this be used to give such cars wider rear tyres?

 

Can we confirm that once you reinstall the stock tyres that the widths reset?

 

Not just Huayra, the Enzo has 245 front and 345 rear... I would like to either increase the front or decrease the rear size to solve this cars handling issues, but 245 on the rear is nuts xD

PD, pls fix this!

 

Excellent find!! Good job! Now the hard part --> get PD's attention to fix this! Maybe someone who speaks japanese can tweet Kaz???

 

Cheers for the info, Chris!
One thing - is the effect FULLY reversed if you revert back to the original wheels? I've added custom rims to a few cars but haven't noticed the difference as I suspect the tyre widths were coincidentally the same, but interested to know if you can "undo" it properly, or whether it's that bad a bug that it's irreversible.

 

hi all, I have a suped up supra that I popped some flashy rims on, just for fun and it definitely changed the handling! lnstantly noticable on my first drive, made the car much less fun to drive. easily remedied by ditching the wheels and never visiting that section again!

 

Yes, car reverts to normal when you re-fit the stock rims.

Original testing and highlighting of my suspicions is here...

https://www.gtplanet.net/forum/threads/rufs-and-tire-physics.293069/

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