seized caliper. I would love if that was my issue! I did notice the right side brakes were quite a bit hotter than the left side and the driver whee spun pretty easily on jack stands. The passenger had a ton of resistance, almost made it hard to spin.

wheel bearings possibly? At 155k miles so I might as well go ahead and replace both sides now to save the headache of who knows how many miles before they go bad and I have to do it anyways.

I know it's not the normal issues but my Camry had a wheel bearing go out, would vibrate at certain mph and hold that steady. Wouldn't change sound with left/right but when replaced all was smooth again. It also had no play when jacked up and checked for movement.

 

See my 2nd post here https://www.clublexus.com/forums/sus...placement.html
for pics of the cracks on my old LCA bushings. Those cracks are deep and open up when you stick a screwdriver in the hole and flex the rubber.

 

I'm going to pull those bushings and check them when I get some time.

Ona side note, I took the driver rear caliper off to check over the brakes and it's seized. Will be checking the passenger rear tomorrow. also, the wonderful people at discount tire way overtightened the lug nuts on the wheels lol!

also the tire had some play from left to right, looked like that rear end link piece.

 

I worked in this industry for 10 years.

Things that do NOT cause vibrations:
Bad shocks
Bad springs
Noisy worn wheel bearings.
Worn suspension components.

Will any of those items allow a vibration to become very noticeable? Absolutely. Are they the cause? No, never.

Spinning reciprocating things cause vibrations.
Tire take the most abuse and can have defects.
Wheels take the second most abuse and a tiny bend equates to runout at the tires perimeter.

Most driveline problems start at roughly 40mph.
Wheel and tire issues really shine at 60 to 70mph.

AWD vehicles with mismatched tires place a greater load on the drive train. Inspect those flex couplers and driveline support bearings. The rubber holding the bearing can degrade.

Just think of those pull string tops. They spin with no bearings or dampers just fine until out of balance.

For everyone here, get in the shop with the tire team and watch what they do and watch your tire. Runout you barely see will make a huge vibration at speed.. especially bent rims that balance just fine. Road force balancing won't fix a bent wheel or one that doesn't mount true to the hub..

GL

 

I checked the rear calipers yesterday. Both are seized and the brake disc rotor won't come off the hub. I'll have to get the bolts screw into it. But I'll clean that rust up. So 2 rear seized calipers can't play any part in this vibration?


still need to check the fronts.

I understand what you're saying. Obviously a road force won't fix a bent rim. That is get fixed or get a new one item.

 

As of now I'm getting my new wheels installed on site at my work. What I noticed more is that running a full tank of gas induces more vibrations. With just a little over half tank the vibrations are pretty much non existence. If these new wheels don't cure it. I'll have to explore more on suspension.

 

Oh ya, Spinny things rubbing making drag will definitely make vibes. Do the rotors show hot spots or bluing?

Just try not to use hammers on the rotor, it's your wheel bearing your beating on. ATF is a good lube for soaking rusty bits. I'd heat the rotor at the hub before beating on it.

Get some penitrating lube on them and buy extra bolts as they'll get damaged and stuck on the rotor.

 

so the piston moves in and out, doesn't look to be leaking but the slide pins are frozen and rusted. I have new rear calipers on the way.

Surprisingly, No to your rotor question. Well, from the out I can see nothing but when I bust them loose and pull both rotors off I'll let you know. I read the rear calipers are common thing of seiZing. Are the front calipers better design/longevity?

*I have not checked the front calipers yet and Jesus I hope they're not seized. It confuses me because the brake pedal doesn't really feel much different than my other car with good brakes/calipers.

Thanks for the ideas!

 

I finally got new wheels mounted with the same year old tires. As of yet full tank of fuel, and high speeds. I can't feel the vibrations like before. Normally on the same patch of roads I'd feel the vibrations accelerating. Passenger seat vibrating like it was having a seizure lol.

 

Don't use ceramic brake paste. It doesn't last, and makes everything stick. I'd recommend some sil-glyde lubricant. Here in Texas heat it seems to hold up well. I'm always messing with brake pads. All the times I have taken the calipers off. The lube is still present.