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Old 05-02-2017, 05:08 PM   #16
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Default Re: [HELP] Iriz Rear End Hopping

Quote:
Originally Posted by DNGFashion View Post
Updates:

Readjusted tire pressure back to stock recommended settings.

Have been driving in and out for one week, rear skipping during cornering at commoner's speed (30-40km/h)is still noticeable.

Any advice please?
have u tried running the tyre pressure i've recommend above?

or try this pressure instead: 180kpa~200kpa max
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Old 05-02-2017, 07:29 PM   #17
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Default Re: [HELP] Iriz Rear End Hopping

Yeah skipping usually means it's a bit too stiff, can be from the suspension and/or the tires. Now since your suspension is still stock and normally stock suspensions are pretty soft already, then most likely is the tires, probably too high pressures and/or rubber too hard with poor grip performance.
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Old 05-02-2017, 07:32 PM   #18
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Default Re: [HELP] Iriz Rear End Hopping

TS mentioned adjusted air pressure back to stock dy.....
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Old 05-02-2017, 07:32 PM   #19
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Default Re: [HELP] Iriz Rear End Hopping

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Originally Posted by 6UE5t View Post
Yeah skipping usually means it's a bit too stiff, can be from the suspension and/or the tires. Now since your suspension is still stock and normally stock suspensions are pretty soft already, then most likely is the tires, probably too high pressures and/or rubber too hard with poor grip performance.
Well, other likely chance is stock suspension jammed?
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Old 05-03-2017, 08:33 AM   #20
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Default Re: [HELP] Iriz Rear End Hopping

Maybe I will go to ftuned to have the suspension system check and also at the same time check for any tyre failure.

Personally, I found that the stock tyre is incompetent

Will get back to everyone soon.

Thanks.
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Old 05-03-2017, 12:38 PM   #21
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Default Re: [HELP] Iriz Rear End Hopping

stock tyre is silverstone....definately it was on the stiff sidewall....


thats why i'm recommending lower tyre pressure than stock....
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Old 05-03-2017, 01:44 PM   #22
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Default Re: [HELP] Iriz Rear End Hopping

Quote:
Originally Posted by ^pomen_GTR^ View Post
stock tyre is silverstone....definately it was on the stiff sidewall....


thats why i'm recommending lower tyre pressure than stock....
Yeap I have tried your recommended tyre pressure, still it skips during cornering
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Old 05-03-2017, 02:05 PM   #23
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Default Re: [HELP] Iriz Rear End Hopping

try open irix rear door. try sit/ press (left and right side) and see hows the rear suspension move up/down. Fast or slow.
Might be one side of the shocks/absorber give way.
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Old 05-03-2017, 02:50 PM   #24
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Default Re: [HELP] Iriz Rear End Hopping

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Originally Posted by vr2turbo View Post
Well, other likely chance is stock suspension jammed?
Quote:
Originally Posted by DNGFashion View Post
Maybe I will go to ftuned to have the suspension system check and also at the same time check for any tyre failure.

Personally, I found that the stock tyre is incompetent

Will get back to everyone soon.

Thanks.

It's a relatively new car so should not yet have suspension problems, let alone jammed suspension. If it does though, sorry to say that means the car quality is crap! I still think most likely is due to the shitty stock tires.
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Old 05-03-2017, 04:20 PM   #25
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Default Re: [HELP] Iriz Rear End Hopping

To us is likely the tyres or suspension. Since tyre reduce air pressure still like that , that is why maybe need check suspension....lol
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Old 05-03-2017, 05:00 PM   #26
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Default Re: [HELP] Iriz Rear End Hopping

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Originally Posted by DNGFashion View Post
Yeap I have tried your recommended tyre pressure, still it skips during cornering

Then next tyre change u can look into more comfort tyre category...


or to my earlier suggestion, change into a softer rear springs...


i believe that u were looking for better comfort?
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Old 05-03-2017, 05:51 PM   #27
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Default Re: [HELP] Iriz Rear End Hopping

Iriz original tyre size should be 175/65R14, tyre should not be that hard being 65 series aspect ratio?
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Old 05-03-2017, 07:53 PM   #28
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Default Re: [HELP] Iriz Rear End Hopping

Personal check on suspension system: seems normal being not too slow and not too fast.
Tyre pressure: I have adopted the recommended range by pomen_GTR
Tyre: 195/55/15 silverstone, which I believe is a terrible tyre.

I'm actually prefer sport handling with little stiff ride.
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Old 05-03-2017, 10:51 PM   #29
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Default Re: [HELP] Iriz Rear End Hopping

Quote:
Originally Posted by DNGFashion View Post
Personal check on suspension system: seems normal being not too slow and not too fast.
Tyre pressure: I have adopted the recommended range by pomen_GTR
Tyre: 195/55/15 silverstone, which I believe is a terrible tyre.

I'm actually prefer sport handling with little stiff ride.
If using 195/55R15 there are many tyre choices......
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