designo

iTrader: (6)

I think it's just a lucky try with spacers. But I have not run smooth with spacers ever since installing them! 25mm and 20mm on stock wheels, and 10mm on 19's. All shake!

At 70 to 85 you can literally sea my passenger seat shake! I hate it!

B.Diddy

iTrader: (1)

You might have a bent inner wheel lip that you are not seeing. You could also have uneven tire wear due to alignment that is now causing vibration. I would suggest you check them out. my GS is steady 100mph+

Ice350

iTrader: (1)

One wheel does have a slight wobble but it's so small the techs do not believe that is the issue. I'm more inclined to believe it's the tires. The car was aligned by an indy and had chopped tire wear. Recently got it done at the dealer. Maybe it will smotth out after a while. It's been about 200 miles since the alignment. I would think that was enough. Maybe not.

Today it was much smoother. Infact, I was on the phone and lost concentration on the speed. I got off the phone and noticed I was driving 80 and it was pretty smooth.

Harlemboi

Had the same problem, after wheel balancing and alignment, turnt out o be a bent rim.. Sounds like that might be ur problem

Ice350

iTrader: (1)

I've already had the wheels looked over.

jre002

are you AWD? If so, axles?

Ice350

iTrader: (1)

Nope, I don't think anyone in Florida would opt for AWD.

mr3gs300

just throwing this out there are all your tires the same? i.e brand, model same age

Ice350

iTrader: (1)

The front are almost 1 year old.

The rears are almost 2 years old.

Same brand and model.

KML505

I had the same issue...thought it was coming from the engine but ended up being a bent wheel...sucks ***!

xxrap985xx

does anyone know the torque specs for the lugs? i have a wobble problem and i want to try that..

lkapimp216

iTrader: (2)

I think the torque spec is 80-85 i run mine bettween 90-95, Ice it could definitely be the tire I had a slight vibration on the rear vredestines i had on the Vossen wheels caused by having a tittie in it, and it think I have another slight bubble in my new Nankangs but this is why i decided to go with cheaper tires cause running a stretched tire (i know your not) exposes the sidewall more and is more vunerable to getting bubbles in the sidewall, also if you have any of your tires plugged for leaks, plugging can cause breaks in the belts causin the tire to roll outta whack. this is the reason I will be getting a enclosed trailer soon so I can tow the Lexus to out of state or long distance functions. the Tundra will eat whatever the road throws at her especially when I throw my 20 inch Monsters w/ 33inch tires on her!!!

gridlock13

iTrader: (1)

i'm pretty sure the manual says the lugs should be torqued down to 76 lbs

rominl

iTrader: (4)

yes, factory spec is 76ft-lb. but if you have aftermarket wheels, the number of turns on the lug nuts are usually less than what you can do on factory. with that, i usually up the tq to 85

tighter doesn't mean you get less vibration. and also remember to tighten them, drive a bit, and recheck the tq again. sometimes it can get a little loose

ypv123

I was lookin at a gs300 past weekend and it had the.same problem...I sorta sighed away but the dealer offered to fix it n call me back this week...should I get it if they fix the vibration? I mean its a good deal..its a 2006 gs300 awd with 75000k on it for $20,850..o and wats.tha deal wig awd and the axle? Hope that's not the case.with that car..any inputs?Wat to look for?