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Topic A tire cool down? Possibly. I'd not bother. While the tires may take a set it doesn't take... |
Vibrations .... again mnchstrcityblues79 - Sunday, 17 February, 2013, at 5:29:59 pm |
Ideas for diagnosis Boxsterra - Sunday, 17 February, 2013, at 5:35:42 pm |
Re: Ideas for diagnosis mnchstrcityblues79 - Sunday, 17 February, 2013, at 5:39:54 pm |
That was to diagnose both Boxsterra - Sunday, 17 February, 2013, at 9:55:25 pm |
Re: That was to diagnose both mnchstrcityblues79 - Monday, 18 February, 2013, at 9:15:30 am |
The Max Summer tires can turn into virtual rocks at low temp. They get skittish, too. *NM* Laz - Monday, 18 February, 2013, at 9:29:44 am |
X2. They lose abotu 40% of their grip, get very hard, and can stay out of round. grant - Monday, 18 February, 2013, at 7:00:16 pm |
Re: Vibrations .... again Guenter in Ontario - Sunday, 17 February, 2013, at 6:40:23 pm |
If this is flat spotting, it should go away after 10-15 miles MikenOH - Sunday, 17 February, 2013, at 9:36:51 pm |
Seems mostly like flat spotting. The 3k vibe might be attenuated with a throttle body cleaning. Laz - Sunday, 17 February, 2013, at 10:16:23 pm |
As most have stated... Pedro (Odessa, FL) - Sunday, 17 February, 2013, at 10:52:57 pm |
For the first issue I'm in agreement with others.. tires are taking a set... MarcW - Monday, 18 February, 2013, at 1:52:31 pm |
Quote
mnchstrcityblues79
Gang:
So, as you may or may not remember, I have been on here "complaining" about vibrations with my Boxster for about a year. Recently I have begun to experience a new type of vibration and the return of a variation of an old vibration.
First: Recently, when I start up the vehicle and first start driving, I feel very noticeable, though not violent, vibrations in the steering wheel. I can also feel the vibrations in the seat, in the brake, clutch and accelerator pedals, and when my heels on just sitting on the floor. This goes on for some minutes but, and I have notice this recently, seem to dissipate as I reach operating temperature (~180). The vibration will return later in the day after the car has sat (~8 hours) but normally not as bad. The mornings have been cold for NC (~35 - 45) as have the evenings (not sure if that matters).
Second: It seems like the 3k vibrations are back, though not nearly as noticeable. Normally with the 3K/engine mount vibrations its a very noticeable vibration in the seat when you are decelerating around 3k. Now I am experiencing an almost constant minimal vibration at 3k (or around 70 mph). If I shift into 4th and the rpms jump, the vibrations "seem" (I say "seem" because at 4k+ rpms, there is more going on back there) to go away. As noted below, the engine mount was replace ~10k ago. The transmission mounts have not been replaced.
Final: At a recent "check-up" the mechanic suggested that the rear sway bar links need replacing, would this be the explanation to all the above?
Thank you so much guys, I really appreciate your expertise.
Pertinent Info:
Daily Driver
2003 Base
~72,000 current miles
@ ~61,000 miles, replaced engine mount
@ ~60,000 miles, replaced all four tires [Continental Extreme Contact DW (Rear); DW XL (Front)]
@ ~57,000 miles, repaired bent right-rear wheel
Regards,
Matthew
PS: As a matter of interest, I finally got my P0430 to go away ..... with a new Cat lol
I take it you're implying (and I agree) a cool down before stopping will cause less flat spotting. *NM* Laz - Monday, 18 February, 2013, at 6:08:20 pm |
A tire cool down? Possibly. I'd not bother. While the tires may take a set it doesn't take... MarcW - Monday, 18 February, 2013, at 8:58:04 pm |
The reasoning is stationary warm tires that cool down in cold weather could take more of a set. Laz - Tuesday, 19 February, 2013, at 9:34:12 am |
An argument can be for a cool down drive especially... MarcW - Tuesday, 19 February, 2013, at 11:35:23 am |
Re: An argument can be for a cool down drive especially... Laz - Tuesday, 19 February, 2013, at 11:56:22 am |
We've arrived at the perfect juncture for a discussion of wrist watches, and whether/how Roger987 - Tuesday, 19 February, 2013, at 3:13:07 pm |
My thoughts exactly *NM* Pedro (Odessa, FL) - Tuesday, 19 February, 2013, at 4:03:31 pm |
Let's get serious. Guenter in Ontario - Tuesday, 19 February, 2013, at 5:13:44 pm |