jcollege

iTrader: (2)

So I am driving down the freeway in the rain yesterday, as I hit 65 mph+ the car starts shaking horribly. This continues all the way from 65-80mph, which is as fast as I got. The odd thing was once the rain stopped the roads and the car were dry, there was no shaking or anything, the car was smooth. Could this be unbalanced rims and the water is adding just enough weight to throw it off? I am at a loss for what could be causing this, and it wasnt just a little wobble, I mean my car was SHAKING! Thanks for the help guys...

Chris0nllyn

iTrader: (1)

My car does that when its dry outside....lol

I blame the shitty tires that are most likely unbalanced, but thats my car

jcollege

iTrader: (2)

I was thinking unbalanced also, but it was ONLY happening in the rain, perfectly smooth when everything is dry, WTF?

Stone17

iTrader: (3)

Do you have Corsa Exhaust?
I have the same problem in the rain with my car.

Read this...
http://www.cadillacfaq.com/faq/answers/corsabang.html

jcollege

iTrader: (2)

Thanks for the link, I have B&B exhaust which also has the same clunking. But this wobble was like the wheels were ready to fall off!

DrSpeed

iTrader: (4)

Any difference rotating those tires to the back, and try the rain again?

serik21

Maybe those tires arnt ment for rain, also could be alignment issue so in dry it's fine with rain it will wobble cuz the Tires and trying to flow the water thru the threads. I would say that most likely you have something loose. Or bad alignment with bad tires

jcollege

iTrader: (2)

Alignment perfect, tires are in good shape, tires are Nitto 555, not made for rain per say, but you think that they could at least go 65mph without wobbling the car to death. Going to get them balanced tonight...so we shall see

Stepside

When you were in the rain, did you try to disengage T/C ?
on-off - then -On; very the mph;
notice anything?

jcollege

iTrader: (2)

I didnt touch the T/C, all I did was apply light throttle from 65-80, wobble continued, throttle or no throttle...

wcryan

iTrader: (2)

maybe one of your weights fell off. I get a very slight vibration through my steering wheel from 65-75. sometimes it does it. sometimes it doesnt

raven154

iTrader: (14)

My car would do the exact same thing with the 19" wheels and bridgestones. Went bake to stock wheels and michelins and not a single issue in the rain. Never actually found the cause other than swapping back.

branland

iTrader: (2)

My car had a bad shake between 65-80 until I replaced the tires. Now it's only a slight vibration at 65. When I went to Willow Springs earlier this year I used my other tires on different rims without the TPM sensors and the vibration was completely gone.

So I had the TPM sensors mounted on the other rims with the same tire and the slight vibration came back. So for my car it's something to do with the balancing and the TPM sensors.

wcryan

iTrader: (2)

hmmmmmmm.... I'll have to try that

joejbal

My car did that right before it put a rod through the pan

egypt123

iTrader: (1)

I'd still check the exhaust. Even if it doesn't end up being that, it's something easy to troubleshoot and eliminate from the equation. I had the same problem as Stone did with my Corsa, but I assume it could happen with any custom exhaust. It only happened in the rain and at certain speeds - similar to your issue. The exhaust would heat up and with the rapid cooling from the rain it would cause the exhaust to flex and rub against the driveshaft. It's been years since I fixed it, but as I recall, it did make the car feel unstable or wobble. It also made a horrendous noise like a very loud hydroplane sound or like going over one of those old drawbridges with the metal grates. If you can put the car on a lift, check the driveshaft for any noticeable rubbing. It should look like ring in the spot where it rubs.

aurora40

iTrader: (1)

It rained an absolute ton here on Sunday, and you said you have Nitto 555's. I'd guess that's the problem.

I went out on Sunday to pick up dinner in my wife's car w/ Eagle ResponsEdge tires, couldn't go more than about 35-45mph there was so much standing water on the road.

I've had the Corsa-clunk too. I doubt it is the metal cooling, as it wouldn't do that repeatedly once it got wet. I think it has more to do with spray pushing it around. It doesn't have to move much before it hits the rear swaybar, or possibly the driveshaft if you installed it too close.