The wheel wobble that won't go
The wheel wobble that won't go
Basically it's a bit of wheel wobble under braking. Not so much at speeds under say 20, but defo over that.
Now, where I'm stuck on it is that I know it isnt brake discs as all 4 have been changed (it did it before and didnt change anything) and also, tracking and balancing has been done recently as I got new tyres.
So, what else can cause wobble under braking? My thought is buckled alloy but surley then it'd be constant and not just under brake?
Any help much appreciated as it's doing my nut!! Oh and if it is likely to be wheel wobble, anyone got any nice ones for sale?
Hello, I have a small issue with my IS300.
Basically it's a bit of wheel wobble under braking. Not so much at speeds under say 20, but defo over that.
Now, where I'm stuck on it is that I know it isnt brake discs as all 4 have been changed (it did it before and didnt change anything) and also, tracking and balancing has been done recently as I got new tyres.
So, what else can cause wobble under braking? My thought is buckled alloy but surley then it'd be constant and not just under brake?
Any help much appreciated as it's doing my nut!! Oh and if it is likely to be wheel wobble, anyone got any nice ones for sale?
As said by Lexusboy, I would get your geometry checked out by WIM.
[SIZE="1"]Lexus IS300 Navigator
Engine: ITG ProFilter, Joe-Z Intake Pipe, Custom HKS Super Drager Exhaust, TRD Oil & Rad Cap & Grounding Kit
Suspension: BC Racing Coilovers, Hotchkis ARB's, Chassis Braces & WIM Geometry
Wheels: 18" OZ Ultraleggera & Falken ZE912 Tyres
Styling: Seibon Carbon Fibre Bonnet, Figs Bonnet Struts, Sports Grill, Repositioned Horns & SS Dials
ICE: JVC KW-AVX720 HU, Hifonics ZXI 6410 Amp, MB Quart RUA 216 2-Way Components, StealthBoXz with Infinity 12" Sub & Reverse Camera[/SIZE]
alamkhan3980
03-08-2016, 09:13 AM #3Welcome to the club.
As said by Lexusboy, I would get your geometry checked out by WIM.
[SIZE="1"]Lexus IS300 Navigator
Engine: ITG ProFilter, Joe-Z Intake Pipe, Custom HKS Super Drager Exhaust, TRD Oil & Rad Cap & Grounding Kit
Suspension: BC Racing Coilovers, Hotchkis ARB's, Chassis Braces & WIM Geometry
Wheels: 18" OZ Ultraleggera & Falken ZE912 Tyres
Styling: Seibon Carbon Fibre Bonnet, Figs Bonnet Struts, Sports Grill, Repositioned Horns & SS Dials
ICE: JVC KW-AVX720 HU, Hifonics ZXI 6410 Amp, MB Quart RUA 216 2-Way Components, StealthBoXz with Infinity 12" Sub & Reverse Camera[/SIZE]
Having said that, could it be a slightly sticking caliper, e.g. uneven force in the braking ? Is it pulling to one side at all under braking ?
![[Image: Sig-enginebay.jpg]](http://i5.photobucket.com/albums/y179/SteveHammatt/Sig-enginebay.jpg)
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
steviewevie
03-08-2016, 09:17 AM #4Some garages do a rubbish wheel balancing service. WIM do a very good one, and it will spot buckled alloys etc.
Having said that, could it be a slightly sticking caliper, e.g. uneven force in the braking ? Is it pulling to one side at all under braking ?
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
To be honest I'm looking for a new set of alloys anyway. And a few more toys, stuff needs to be done to my IS300... It's the addiction that never goes away...
Nah, I don't think it's pulling at all, just steering wheel wobble really. I've heard of WIM but I wouldnt like to make one trip there, only to find out wheels are buckled, then have to go back again for another balance once I get a set!
To be honest I'm looking for a new set of alloys anyway. And a few more toys, stuff needs to be done to my IS300... It's the addiction that never goes away...
I wouldn't have thought that buckled/unbalanced wheels would only show when you brake. When I had wheel balancing issues I had a vibration all the time, not just under braking.
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
steviewevie
03-08-2016, 09:44 AM #6I wonder if its something to do with the front suspension, since when you brake you're getting a lot of weight transferred to the front of the car, and this could induce your problem ?
I wouldn't have thought that buckled/unbalanced wheels would only show when you brake. When I had wheel balancing issues I had a vibration all the time, not just under braking.
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
.If not then I would highly recommend it. I'm not sure that bad geometry would be causing the problems that you're describing, but even if that needs otherwise fixing, the handling of your car will be improved by using WIM's geometry settings.
If you make the trip there to do the geo, you could always get them to check the balancing of your wheels on their machine, at least if their machine says your wheels are fine then you will know that's really true (i.e. because they have decent machines and expert operators).
Is WIM far for you ?
steviewevie
03-08-2016, 09:53 AM #8Has your car ever been WIM'd ? i.e. the geometry set up there ?
If not then I would highly recommend it. I'm not sure that bad geometry would be causing the problems that you're describing, but even if that needs otherwise fixing, the handling of your car will be improved by using WIM's geometry settings.
If you make the trip there to do the geo, you could always get them to check the balancing of your wheels on their machine, at least if their machine says your wheels are fine then you will know that's really true (i.e. because they have decent machines and expert operators).
Is WIM far for you ?
[SIGPIC]http://i76.photobucket.com/albums/j33/shazza1978/GTSTCHRIS.jpg[/SIGPIC]
gtst-chris
03-08-2016, 09:54 AM #9I think steveie has hit it on the head, I'd be getting the garage to look at all your suspension joints and if it has them tension rods as they are designed to stop the wheels moving forward under breaking.
[SIGPIC]http://i76.photobucket.com/albums/j33/shazza1978/GTSTCHRIS.jpg[/SIGPIC]
sugarytea Nah, I don't think it's pulling at all, just steering wheel wobble really. I've heard of WIM but I wouldnt like to make one trip there, only to find out wheels are buckled, then have to go back again for another balance once I get a set!
To be honest I'm looking for a new set of alloys anyway. And a few more toys, stuff needs to be done to my IS300... It's the addiction that never goes away...
Hi sugarytea, if you get new alloys, will you sell your old ones, as mine are so badly corroded and flaking with bad kurb chunks missing, (not by me),
too far gone for refurb, hope you don't mind me asking, cheers buddy
phil
sugarytea Nah, I don't think it's pulling at all, just steering wheel wobble really. I've heard of WIM but I wouldnt like to make one trip there, only to find out wheels are buckled, then have to go back again for another balance once I get a set!
To be honest I'm looking for a new set of alloys anyway. And a few more toys, stuff needs to be done to my IS300... It's the addiction that never goes away...
Hi sugarytea, if you get new alloys, will you sell your old ones, as mine are so badly corroded and flaking with bad kurb chunks missing, (not by me),
too far gone for refurb, hope you don't mind me asking, cheers buddy
phil
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