seanyoon

I have 07 gs350 awd with vossen 20" wheel without any suspension

now im having a problem with rear side of my car it make rubbing if someone seat back there..

so if i install lowering spring
it may fix that problem ?

IXI187IXI

iTrader: (3)

no. im assuming you have incorrect tires on the car, possibly over spec'd which is causing the rubbing

seanyoon

i have 245/35/20 and 275/30/20

NickL

What offset are the wheels? Lowering will make the rubbing worse. Your problem is your tire size.
Not only they're >3% larger in diameter than your stock. They're also ~1% difference from each other(front/back). Getting the diameter as close as possible in AWD is important.
I advise you change the tires and use this calculator to select a better size.
http://www.1010tires.com/TireSizeCal...mp;vehicle=yes

IXI187IXI

iTrader: (3)

^ correct. I mean you could use that front tire but i dont recommend it but even the overall diameters of those 2 tires dont match

seanyoon

o...my,.. i just installed nf210 on awd with vossen 20inch.. still rubbing!' T.T help me guys..

seanyoon

if is the tire problem then tell me the size please

msgs350

iTrader: (2)

Who sold you the wheels? Maybe they can help you with offset specs. I know we've been trying to help you with tire sizes but knowing the wheel specs would really be helpful.

Lex Luga

iTrader: (11)

if anything lowering the car will make the rubbing worse.