jasonv Posted November 2, 2022 Share Posted November 2, 2022 2005 legacy gt wagon. 150k mileage Im looking for some ideas to help with my wheel shake issue. I experience the shake while breaking above 30 mph it’s not noticeable below that speed. New rotors only last anywhere from a few days to a week before the shaking starts. Listed below are the parts thrown at it. I’ve tested the temperature of the rotors multiple times the highest temp I’ve seen was 150 each side. 4 different brands of front rotors 3 different brands of front pads Both front calipers and carriers Brake lines all around Both lower a arm bushings Both front wheel bearings Steering rack (used) new tie rods both sides Both ball joints Perrin steering damper lock Thanks Link to comment Share on other sites More sharing options...
GearJamr Posted November 3, 2022 Share Posted November 3, 2022 My first thought was warped rotors, but maybe not. My next immediate thoughts are do you have spacers? Maybe a wheel is missing a hub ring? Anything in the suspension loose? Wheel unbalanced or bent? Link to comment Share on other sites More sharing options...
silverton Posted November 3, 2022 Share Posted November 3, 2022 Wheel balance. Link to comment Share on other sites More sharing options...
jasonv Posted November 4, 2022 Author Share Posted November 4, 2022 I do have snow wheels and tires. Swapping those made no difference. Hub rings are in. No spacers. Suspension is tight. 1 Link to comment Share on other sites More sharing options...
GearJamr Posted November 4, 2022 Share Posted November 4, 2022 You might be getting deeper in then. Maybe wheel hubs, or axles, maybe even something trans or diff related. Maybe the used steering rack is messed up. Think back to when it started, what was the last thing that was changed or happened before the issue started? I was getting an intermittent vibration when driving at highway speeds because the ball joints I got didn't fit the lower arms properly and were loose. So retracing your steps might lead you to the solution. Link to comment Share on other sites More sharing options...
jasonv Posted November 4, 2022 Author Share Posted November 4, 2022 I was thinking the same with the rack. Crazy if both racks have the same exact issue. First time I noticed shaking I thought nothing of it thinking I just needed a new set of rotors until I swapped out with a new set and the problem didn't go away. All the parts listed are attempt to fix the issue. Link to comment Share on other sites More sharing options...
silverton Posted November 4, 2022 Share Posted November 4, 2022 On 11/2/2022 at 3:53 PM, jasonv said: New rotors only last anywhere from a few days to a week before the shaking starts. When you replaced the wheel bearings did you replace the hubs too? This makes my somethings weird if "it's fine for a few days" sense tingle. What brands of rotors and pads have you been using? Do you do a proper bedding procedure? Do you torque the lug nuts to 120nm? Link to comment Share on other sites More sharing options...
jasonv Posted November 9, 2022 Author Share Posted November 9, 2022 Yes hubs and bearings. All rotors were higher end brands. I tried a few different bedding procedures. The normal drive without hard braking and the stoptech way.https://centricparts.com/getmedia/fd8de72f-7d67-4118-a249-f1108e1d9f98/Centric_and_APC_Technical_Whitepaper_C4-Bed-In-Performance-8-2018_1.pdf. Lugnuts are torqued to spec. Link to comment Share on other sites More sharing options...
silverton Posted November 9, 2022 Share Posted November 9, 2022 (edited) I do a truncated centric bedding. 3-4 medium semi-stops from 40, 3-4 hard semi-stops from 60-70. get the front wheels off the ground and grab them at 9 and 3 and give it a good back and forth. If you feel a shake while driving, you almost HAVE to feel some play in whatever component is bad. Edited November 9, 2022 by silverton Link to comment Share on other sites More sharing options...
m sprank Posted November 15, 2022 Share Posted November 15, 2022 I was going to ask about the bedding process used for new brake rotors/pads. It sounds like an inconsistent build up of pad material on the rotors causing the vibration. This is normal condition on an automatic 4th gen Legacy. Cant tell you how many times I had to re-bed pads for customers due to build up shakes. Link to comment Share on other sites More sharing options...
jasonv Posted November 20, 2022 Author Share Posted November 20, 2022 So it sounds like it could possibly be an actual brake bedding issue. Any recommendations on brand of rotor / pads to help with this issue? Link to comment Share on other sites More sharing options...
silverton Posted November 20, 2022 Share Posted November 20, 2022 (edited) I used a Power Stop geomet coated rotor and pad kit, along with their red coated calipers on my 2001, and it stops better than my 2017. The shop I work at uses either OEM or oreilly brand whatevertheheckthatis, and I don't notice a difference in how they bed. Edited November 20, 2022 by silverton Link to comment Share on other sites More sharing options...
m sprank Posted November 21, 2022 Share Posted November 21, 2022 For standard replacements OEM works fine, but is expensive. We used a lot of Centric premium rotors and Stop Tech street performance pads at my shop. Link to comment Share on other sites More sharing options...
jasonv Posted November 21, 2022 Author Share Posted November 21, 2022 I'm currently running Centric premium rotors and Stop Tech street performance pads. Link to comment Share on other sites More sharing options...
m sprank Posted November 21, 2022 Share Posted November 21, 2022 Manufacturer specific instructions attached. bed.pdf Link to comment Share on other sites More sharing options...
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