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12-18-2004, 08:53 PM | #1 |
Scooby Newbie
Member#: 67444
Join Date: Aug 2004
Location: S. Portland Maine
Vehicle:gone 02 SVT Focus 02 WRX Wagon slvr/sold |
Tire thumps sometimes after being parked
I have a strange issue.
It seems that some times after my car is parked for a few hours that it will somtimes thump when I start driving. Mostley noticable when I get up to 40mph and above. It does eventually go away. Also they are Perelli Pzero Nero M&S. Have less than 4k miles on them. I think its the right rear tire. It doesn't happen every time. Also I have a suspension crunching nosie in the right rear part of the car. Any coincidence?? The suspension crunch happens when I go over some bumps and sometimes when I accelerate. It doesn't happen on every bump or motion and I can NOT repreduce the nosie by moving the car. ANY THOUGHTS?
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12-18-2004, 10:23 PM | #2 |
Scooby Newbie
Member#: 21508
Join Date: Jul 2002
Chapter/Region:
Tri-State
Location: New Jersey
Vehicle:'03 WRX Wagon Silver |
As the weather gets colder the rubber becomes firmer and less pliable. The "thumping" is the tire maintaining memory of its shape from when parked. Some people call it flat-spotting. It's more noticeable with summer tires in cold weather, but with your Pirellis I'd expect this not to happen so much. I don't have them, so I wouldn't know. Since it is only noticeable on one tire, I'd be suspicious of low pressure in that one. Better check all your pressures to be sure. If the pressures are ok, I'd check ballance. Maybe it's been slightly off, but the combination of cooler weather and flat-spotting makes it more noticeable.
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12-20-2004, 01:26 AM | #3 |
Scooby Newbie
Member#: 75972
Join Date: Nov 2004
Chapter/Region:
South East
Location: Tallahassee, FL
Vehicle:2002 WRX Midnight Black Pearl |
Stanton is right. It's a flatspotting issue. Sometimes made worse by the construction of the tire itself. My bias ply tires on my truck flat spot if the weather drops below 50 degrees. Very normal. Check your pressures, and also check to see if that corner of your car is heavier for some reason, or your parking in an uneven spot where that corner bears more weight than the others.
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12-20-2004, 01:31 AM | #4 |
*** Banned ***
Member#: 16200
Join Date: Mar 2002
Vehicle:OK buy Nates beans westcoastroasting.com |
I've had tires that flat spotted so bad when cold that you thought for sure you had 4 flats for the first couple miles Forget what tires those were....had those on my SE-R....had LOTS of tires on the front of THAT car
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12-20-2004, 11:22 AM | #5 |
Scooby Newbie
Member#: 76269
Join Date: Dec 2004
Chapter/Region:
MAIC
Location: Pasadena, MD
Vehicle:2003 Impreza WRX Platinum Silver Metallic |
I had a set of the Pirelli P Zero Nero M+S fitted to my 2003 WRX two weeks ago (~500 miles so far) to replace the stock Bridgestone RE92; I stayed with the stock 205/55WR16 sizing. As the overall temperatures have dropped here in Maryland I have noticed the problem mentioned (thumping tires) with every cold morning/cold evening drive…the colder it is the more pronounced the problem. I can’t pinpoint the problem to any one tire and tire pressures have been checked all around. I park the car on a concrete driveway at my house overnight and during the day she sits parked in an asphalt parking lot. I figured this was a flatspotting issue from the symptoms but out of all the reviews I read on TireRack.com before purchasing this tire I never once heard of anyone complain about this (unlike the ContiExtreme). Yes the problem goes away after a few miles of driving, once the tire has flexed enough to start warming up, but I’m curious about any damage the tire might be incurring while in this “out of round” state? Any thoughts?
If this were a balancing issue, as Stanton offered as a suggestion, wouldn’t the problem exist regardless of temperature? |
12-20-2004, 11:38 AM | #6 |
Scooby Newbie
Member#: 39342
Join Date: Jul 2003
Location: Sacramento,CA
Vehicle:2004 WRX WR BLUE |
I've got PZero Nero M+S tires that are doing the same thing...when parked for a few hours in cold temps (under 30degrees F) the tires thump for a few miles. I've never had tires do this before, so I'm just chalking it up to a quirk with these Pirelli's. Other than being an annoyance, it's not causing any harm. The tires heat up after a minute or two of driving and the problem goes away.
Brian |
12-20-2004, 11:50 AM | #7 |
Scooby Newbie
Member#: 75972
Join Date: Nov 2004
Chapter/Region:
South East
Location: Tallahassee, FL
Vehicle:2002 WRX Midnight Black Pearl |
No damage done. Prior to radials being widely available, this was a very normal thing for cars. (Why do you think they have warmup laps in racing... its the TIRES they are warming up!)
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12-20-2004, 12:30 PM | #8 | |
Scooby Newbie
Member#: 76269
Join Date: Dec 2004
Chapter/Region:
MAIC
Location: Pasadena, MD
Vehicle:2003 Impreza WRX Platinum Silver Metallic |
To put any fears to rest I picked up the phone and called Pirelli to see what they had to say on the subject. The gentleman I spoke to said this is a normal occurrence with high performance tires and Pirelli’s full nylon cap (?) across the top of the tire conforming to the road surface while parked in colder temps; after about 2 to 5 miles of driving the thumping/vibration should be gone and no damage is being done to the tires during this time.
Quote:
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01-03-2005, 11:29 AM | #9 |
Scooby Specialist
Member#: 34877
Join Date: Apr 2003
Chapter/Region:
Tri-State
Vehicle:2005 Legacy GT sedan |
If you have a short trip to the store you feel it the whole way. I just got mine last week. I really wish someone had mentioned this on the tiretack site, by tirerack when I spoke to them or by the tire installer. I don't like the feeling. Had I know this I probably gone with the Falken Ziex ZE512 which I have on my wife's Forester and don't flat-spot.
I just spoke with Pirelli customer service and they are unaware of any problem of flat-spotting with the tire and recommend I call customer affairs tomorrow (closed today). Interesting Last edited by jim1969; 01-03-2005 at 11:39 AM. |
01-03-2005, 08:51 PM | #10 |
Scooby Newbie
Member#: 21508
Join Date: Jul 2002
Chapter/Region:
Tri-State
Location: New Jersey
Vehicle:'03 WRX Wagon Silver |
and depending on where in NY you are you haven't really seen cold weather yet.
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01-03-2005, 10:57 PM | #11 |
Scooby Specialist
Member#: 34877
Join Date: Apr 2003
Chapter/Region:
Tri-State
Vehicle:2005 Legacy GT sedan |
Long Island. I know I haven't seen cold yet. That's what concerns me. When it get to the single digits or teens I'll have more of this.
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01-03-2005, 11:08 PM | #12 |
*** Banned ***
Member#: 16200
Join Date: Mar 2002
Vehicle:OK buy Nates beans westcoastroasting.com |
If you guys are gonna bitch and moan about flatspotting in cold weather....AND have GREAT tires for the conditions..........
Buncha crying wimps. |
01-03-2005, 11:13 PM | #13 |
Scooby Specialist
Member#: 34877
Join Date: Apr 2003
Chapter/Region:
Tri-State
Vehicle:2005 Legacy GT sedan |
Thanks for your input.
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01-04-2005, 09:44 AM | #14 |
Scooby Specialist
Member#: 34877
Join Date: Apr 2003
Chapter/Region:
Tri-State
Vehicle:2005 Legacy GT sedan |
Well, I spoke with consumer affairs this morning. According to them 1: only the the 235/55/17 on the Ford mustang GTis rated AA for traction.(I thought all of them were AA rated for traction). 2: according to Pirelli these tires DON'T flat-spot overnight and anyone who is having this problem should go to an authorized Pirelli dealer.
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01-04-2005, 07:56 PM | #15 | |
Scooby Newbie
Member#: 21508
Join Date: Jul 2002
Chapter/Region:
Tri-State
Location: New Jersey
Vehicle:'03 WRX Wagon Silver |
Posted 10/21/04...
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