Vibration from wheels when cold
I have been getting a slight vibration every morning for the first few minutes driving. As the weather has been getting cooler, it seems to be getting more pronounced. But it always clears up and disappears by the time the engine is warm. I've checked the tire pressure all around and it's fine. This never happens in the afternoon.
Any ideas? |
Flat spots on tires possibly? Do you daily/regularly drive the 986?
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Yes, it's my DD. And I've looked at the tires, and didn't see anything amiss. They are old, but with low miles.
Could it be needing an alignment? |
That's perfectly normal for cold performance tires to feel a little lumpy at first in colder weather. Driving warms them up and they lose their "flat spot"
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Hopefully that's all it is, but if it continues to get worse and starts doing it after warmed up, I'd have the tires checked for tread or belt separation.
This can be the first sign of trouble in an older tire and can eventually end somewhat violently. Probably not the case, but I'm just throwing it out there. |
Check the edges of your tires. This happened to me on a different car, but same symptoms. Guy at the tire store found a tire was slightly cupped on a edge. He said when the tire is cold, you drive more on the edges and the issue is more pronounced. When the tire warms up, it runs more on the center.
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what tire are you running, some are known to flat spot
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I believe they are the original tires. So, whatever was standard for a base model in 2004.
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that could be one of probably 5 different tires
If they are 11 years old, they are dangerous to drive on If you don't want to spend a lot of $$, look at Sumotomo HTR ZIII You can get a set of 4 in 17" for under $400 for summer tires. Its a really good performing tire, especially at its cost |
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I'll bet you change tires and the problem vanishes too. |
Yikes!
I'll tell this as an extreme example. When I first bought my Jeep Wrangler it was 12 years old but low mileage one owner. The tires looked very good so I didn't think anything of it. Turns out they were original. I began feeling a slight vibration that was getting worse. Thinking it was a frond-end issue (common on Wrangler TJs) I made an appointment to have it checked out. On the way to the shop driving on the turnpike, the left front tire threw its tread! It ripped off the front fender and broke the step bar in half. I was able to keep control and get to the side of the road without hitting anyone but it could have gone much darker. I've also had older tires on cars in the past that caused vibrations and ended up with either separating belts or bubbles in them. (admittedly doesn't sound like your vibration problem, but still....) If those are indeed original tires I wouldn't drive another day without replacing them, even if you have to go cheap (I did on my daily, not wanting to continue on the aging Michelins and the cheapie tires have been just fine). ;) |
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Thanks you guys. Would a tire store be able to tell me if these are about to go south?
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Check the DOT date code. It is 4 numbers MMYY. If it is more than 5 years old. throw the tires away
http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=11 |
There should be a build date stamped on the sidewall. If they're 11 yrs old, they're beyond south.
Byproduct - why do you say he's wrong? I had a wheel bearing going bad that caused the tire issue, but I would only notice the vibration for a short time. |
Ok, looks like I'm in the market for tires!
Any other recommendations, aside from the Sumotomo HTR ZIII mentioned above? |
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Yeah, I've used them for years. But wanted to see if anybody here had other recommendations.
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What kind of driving do you do?
Will you be driving in temps below 40f? |
Although the weather here has been beautiful, it is in fact October so I should probably look into good rain, winter tires. We only occasionally get snow here, but will often have cold temps. So does anyone have a recommendation for a good AS tire?
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Continental EXTREMECONTACT DWS
I have Michelin Pilot Sport A/S 3 on my 996 and they are very noisy http://www.tirerack.com/tires/tests/testDisplay.jsp?ttid=201 |
Geez. About a quarter of the reviews for those tires (amazon) are one star.
http://www.amazon.com/Continental-ExtremeContact-DWS-All-Season-Tire/product-reviews/B004QGZLKS/ref=cm_cr_pr_hist_2?sortBy=helpful&reviewerType=al l_reviews&filterByStar=two_star&pageNumber=1 |
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who buys tires on amazon anyway? |
Ok, those bad reviews were referring to the previous version of the tire. Apparently, there were a number of side wall blow-outs. These should be fine for the winter.
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Had a set of the Conti EC-DWS tires (previous version) on Party A's daily and they were good - especially for price. Quiet, smooth and good in snow. Not longest tread life but sufficient. Replaced once over and would have again but traded it in.
Good luck :) |
Yeah it looks like the Conti DWS 06 are in my near future! I hope they handle reasonably well in the dry.
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I've had those Continental DWSs on my weekender for a couple of years and have really liked them.
Been through several potholes and construction zones and haven't blown one out yet. ;) Firestone Firehawk on the other hand..... got the lifetime warranties on them because I had to replace blown sidewall tires so often. |
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