As the title states, when letting go of the throttle at high speed full throttle my car shakes as though I'm moving the steering wheel side to side..but its actually the car doing it, but making me have to move the wheel to counter the shakes

When I first noticed it my cars alignment was off so I got that fixed and it helped abit...but still shakes some what violently

I notice it happen more around letting go of throttle around high speeds with hard acceleration any hard acceleration and letting go of throttle over 120ish klms sets it off

As I have been doing some e tuning, I test the car doing 3rd gear pulls and its quite bad after letting go of throttle at redline

Anyone know what this is? Or could be? Any help is appreciated

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Does it feel like its coming from the rear (you feel it in your seat), or from the front? Possible problems: wheel balance or rear axle inner joints. just a couple things to look at...i usually start with the cheapest alternative first. My car would vibrate on acceleration, so i swapped inner axle joints left to right, now i have a slight vibration on deceleration.

 

Well at first I thought it was axles, so I put in some drive shaft spacers...still no good, I'll look into wheel balancing

Any other ideas?

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Could it also be cheapo tyres?

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cheap tires shouldn't be a problem as long as they are balanced, but if they never seem to balance correctly, your wheel may be bent.

 

ive also heard of dirty rear diff fluid causing weird problems (maybe vibration??)

 

hmmm new wheels arrive this week so ill see if anything changes when i put them on

the shaking only seems to happen at high speeds after letting go of hard throttling

i think shaking might not describe my problem so well, but it kind throws my car side to side...sort of like in heavy rain and u drive through a puddle

 

hmmm... tricky. you might also give the whole suspension a general inspection...like check for worn bushings/ball joints/tie rods etc.