10-13-2015, 12:04 PM
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#1
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Registered User
Join Date: Jun 2014
Location: Oregon
Posts: 455
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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?
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'04 Midnight Blue Metallic 986
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10-13-2015, 12:09 PM
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#2
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Registered User
Join Date: Apr 2014
Location: Chicago
Posts: 329
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Flat spots on tires possibly? Do you daily/regularly drive the 986?
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'99 Porsche Boxster 986 - weekend car
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10-13-2015, 12:12 PM
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#3
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Registered User
Join Date: Jun 2014
Location: Oregon
Posts: 455
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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?
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'04 Midnight Blue Metallic 986
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10-13-2015, 12:46 PM
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#4
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Registered User
Join Date: Mar 2013
Location: New York
Posts: 347
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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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10-13-2015, 01:08 PM
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#5
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Registered User
Join Date: May 2013
Location: Oklahoma City
Posts: 856
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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.
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10-13-2015, 01:31 PM
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#6
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Registered User
Join Date: Sep 2006
Location: Omaha
Posts: 2,866
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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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2008 Boxster S Limited Edition #005
2008 Cayman S Sport - Signal Green
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10-13-2015, 02:04 PM
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#7
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,793
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what tire are you running, some are known to flat spot
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10-13-2015, 03:15 PM
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#8
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Registered User
Join Date: Jun 2014
Location: Oregon
Posts: 455
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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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'04 Midnight Blue Metallic 986
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10-13-2015, 03:26 PM
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#9
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,793
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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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2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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10-13-2015, 03:47 PM
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#10
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Registered User
Join Date: Sep 2013
Location: California
Posts: 466
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Quote:
Originally Posted by Finnegan
I believe they are the original tires. So, whatever was standard for a base model in 2004.
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Wow, despite the current problem, it is time for a new set of tires. Do you really want to risk your own and others safety running around on 11 year old tires?
I'll bet you change tires and the problem vanishes too.
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"Blind acceptance is a sign, of stupid fools who stand in line."
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10-14-2015, 01:58 AM
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#11
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Registered User
Join Date: May 2013
Location: Oklahoma City
Posts: 856
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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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Last edited by Retroman1969; 10-14-2015 at 02:01 AM.
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10-14-2015, 08:43 AM
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#12
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Registered User
Join Date: Oct 2008
Location: O.C. CA
Posts: 3,709
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Quote:
Originally Posted by husker boxster
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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Guy at tire store is wrong & doesn't know what he is talking about!
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10-14-2015, 09:20 AM
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#13
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Registered User
Join Date: Jun 2014
Location: Oregon
Posts: 455
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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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'04 Midnight Blue Metallic 986
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10-14-2015, 10:15 AM
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#14
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,793
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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
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2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
Last edited by JayG; 10-14-2015 at 10:25 AM.
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10-14-2015, 10:19 AM
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#15
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Registered User
Join Date: Sep 2006
Location: Omaha
Posts: 2,866
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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.
__________________
GPRPCA Chief Driving Instructor
2008 Boxster S Limited Edition #005
2008 Cayman S Sport - Signal Green
1989 928 S4 5 spd - black
1987 928 S4 - Granite Green Metallic (Felsengrun)
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10-14-2015, 10:26 AM
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#16
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Registered User
Join Date: Jun 2014
Location: Oregon
Posts: 455
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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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'04 Midnight Blue Metallic 986
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10-14-2015, 10:29 AM
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#17
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Registered User
Join Date: Oct 2008
Location: O.C. CA
Posts: 3,709
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Quote:
Originally Posted by husker boxster
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.
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Difference between hot & cold tire will not have any effect on tire wear unless you are over driving on track. Google tire cupping to see if your tire actually was cupping.
__________________
OE engine rebuilt,3.6 litre LN Engineering billet sleeves,triple row IMSB,LN rods. Deep sump oil pan with DT40 oil.
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10-14-2015, 10:30 AM
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#18
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Registered User
Join Date: Oct 2008
Location: O.C. CA
Posts: 3,709
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Quote:
Originally Posted by Finnegan
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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Go to Tire Rack.com for info & trice guidelines.
__________________
OE engine rebuilt,3.6 litre LN Engineering billet sleeves,triple row IMSB,LN rods. Deep sump oil pan with DT40 oil.
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10-14-2015, 11:09 AM
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#19
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Registered User
Join Date: Jun 2014
Location: Oregon
Posts: 455
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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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'04 Midnight Blue Metallic 986
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10-14-2015, 11:31 AM
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#20
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,793
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What kind of driving do you do?
Will you be driving in temps below 40f?
__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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