Vibrateing Through The Car Under Full Throttle.

[Leeroy-is200]

As the title says guys I have a 2000 Lexus is200 sport I lowered the car 50mill on tenzoR springs and all is good but when there is people in the back and I give the car abit there is a vibration right through the car. I can confirm that the wheels are not scrubbing, all of them are tight, tyre pressures are all spot on, when there is no one in the back the car drives 100% anyone any idea what this could be?

[sprinter2012]

It does sound a lot like the weight in the back combined with the shift in weight from hard accelaration is compressing the rear shock the the point where things are rubbing.

Are you running the standard 5 spoke lexus alloys?

[Leeroy-is200]

No i have put a set of brand new alloys on the car about 2 months ago and they are the correct fittment, there is no rubbing sound just this vibration then im on the power band with people in the back.