[HELP] Iriz Rear End Hopping - Zerotohundred.com


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Old 04-20-2017, 08:12 AM   #1
DNGFashion
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Default [HELP] Iriz Rear End Hopping

Hi all sifus,

Currently, while I take corners (medium long / long corners) on uneven pavement or motorway with expansion joints or mild uneven surface at 50km/h or less, the rear end will skip or hop. Also I neither accelerate nor brake during cornering.

I have looked up on cars with torsion beam suspension. Some of them experienced such complications while others are close to none. Also, there are no concrete direct solutions which can curb this problem.

Any recommendations or advice please?

Thank you.
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Old 04-20-2017, 09:50 AM   #2
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Default Re: [HELP] Iriz Rear End Hopping

stock suspension?
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Old 04-20-2017, 09:52 AM   #3
DNGFashion
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Default Re: [HELP] Iriz Rear End Hopping

yes stock suspension.
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Old 04-20-2017, 11:21 AM   #4
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Default Re: [HELP] Iriz Rear End Hopping

Check your rear tyre pressure.

If its really hopping then the vsc light should blink.does it blink?
Some bridge joint or road joint are metal and your tyre wont have much grip.but in this case it will slide a bit,nothing dramatic.
the stock tyre is crappy.
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Old 04-20-2017, 11:37 AM   #5
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Default Re: [HELP] Iriz Rear End Hopping

Some expansion joint is overlay with concrete.
Nope the VSC light didn't blink.

So to change tyre and suspension?
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Old 04-20-2017, 11:45 AM   #6
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Default Re: [HELP] Iriz Rear End Hopping

dont change the tyre if its really hopping as its due to either the an overinflate tyre or suspension or you are going too fast for the corner.
i have never experience hopping before or normal driviing speed.however,the rear suspension can easily be upset when you are driving alone with the rear tyre inflated to the higher recommended pressure to carry people.
fast definition really depends to individual.my fast could be slow for you.

The cheapest solution is to recheck the tyre pressure and adapt your driving style to the car character.
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Old 04-20-2017, 11:51 AM   #7
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Default Re: [HELP] Iriz Rear End Hopping

Front 32 psi and rear 30psi, driving alone all the time.
My normal cornering speed is equal or less than 40km/h on medium long or long corners. If sharp turns, it will be definitely lower than 10km/h. Cornering wouldn't be fun anymore :(

I try lowering the tyre pressure
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Old 04-20-2017, 12:37 PM   #8
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Default Re: [HELP] Iriz Rear End Hopping

Check suspension, whether worn or could be jammed......
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Old 04-20-2017, 12:39 PM   #9
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Default Re: [HELP] Iriz Rear End Hopping

can it be done on my own? or I need to consult a mechanic for such service?
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Old 04-20-2017, 12:50 PM   #10
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Default Re: [HELP] Iriz Rear End Hopping

Quote:
Originally Posted by DNGFashion View Post
can it be done on my own? or I need to consult a mechanic for such service?
Normally they press hard on your car and see the re bounce. If car keep bouncing up and down means worn. If jam then hard to even press down. Best if can find suspension test machine. Some tyre shops used to have, but lately cannot find any. Car driven over a platform, the machine bounces the tyre up and down then record the feedback.....
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Old 04-20-2017, 01:06 PM   #11
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Default Re: [HELP] Iriz Rear End Hopping

Quote:
Originally Posted by DNGFashion View Post
Hi all sifus,

Currently, while I take corners (medium long / long corners) on uneven pavement or motorway with expansion joints or mild uneven surface at 50km/h or less, the rear end will skip or hop. Also I neither accelerate nor brake during cornering.

I have looked up on cars with torsion beam suspension. Some of them experienced such complications while others are close to none. Also, there are no concrete direct solutions which can curb this problem.

Any recommendations or advice please?

Thank you.

check your tyre pressure first...

set at around 180-210kpa max for rear tyre



if still not sufficient.... then u can try retrofit softer rear spring....probably from 1st model myvi
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Old 04-20-2017, 01:22 PM   #12
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Default Re: [HELP] Iriz Rear End Hopping

Quote:
Originally Posted by ^pomen_GTR^ View Post
check your tyre pressure first...

set at around 180-210kpa max for rear tyre



if still not sufficient.... then u can try retrofit softer rear spring....probably from 1st model myvi
Will get back with updates should such problem persists.
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