I've noticed that I have somewhat of a whiring sound from the wheels when driving and it gets more pronounced when going around a curve (especially left curve at higher speeds). I think it's coming from the left wheel. It's a steady whiring sound. Any ideas what this could be?

__________________
-E300d '99 350k
-Suburban '93 220k
-TDI Jetta '03 350k
Sold
-F250 '96 7.3
-Dodge Ram 12V
-E320 '95 200k
-E320 Wagon 1994 155k
-300d Turbo '87 187k miles
-E320 1994 200k
-300d Turbo '84 245k (sold to Dan62)
-300d Turbo '84 180k
-300sd '80 300k
-7.3 Powerstroke Diesel 15P Van 500k+ miles
-190d '89 Non Turbo 2.5 5cyl 240k (my first MB)
Tom's Imports of Columbia MO Ruined the IP in changing leaky delivery valve O-Rings - Refused to stand behind his work. Mid-MO MB drivers-AVOID Tom's.

Wheel Bearings

__________________
'84 300SD sold
124.128

Funny I briefly noticed the same thing on my 300E this afternoon only at lower speeds (like a parking lot). I would suspect a wheel bearing going bad.

__________________
TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

Wheel bearings typically give more of a rumble.

Check the heat shields on the brakes, perhaps the bearing has some slop and is allowing it to touch the rotor?

Warm weather always brings out the noises, ... windows open and all.

__________________

Gone to the dark side

- Jeff

My car had developed a persistent rumbling/growl/whirr noise on the right front, definitely more pronounced when turning. I was all ready to do the wheel bearings, since the front is definitely more manageable than the rear in most cases.

Well just before I was almost fed up with the noise..... I rotated the tires front to back..... since they were due. Well, the noise immediately disappeared and soon showed up on the rear! I tracked it down to a bent inner lip on the wheel! Got it fixed and all is well.

Most likely not your problem, but jack it up and spin the wheels, take the wheel off and inspect.

__________________
http://i193.photobucket.com/albums/z...-RESIZED-1.jpg
1991 300E - 212K and rising fast...

Inspect motor mounts.

__________________
Kent Christensen
Albuquerque
'07 GL320CDI, '10 CL550. '01 Porsche Boxster
Two BMW motorcycles

WHIR,GROWL,RUMBLE MORE PRONOUNCED WHEN TURNING,WHEEL BEARINGS!!!!!

Examine the tires for wear, or being cheap junk, before tearing into stuff. Maybe rotate the tires. Beyond that as was said, likely wheel bearing.

__________________
One more Radar Lover gone...
1982 VW Caddy diesel 406K 1.9L AAZ
1994 E320 195K

"TURNING" is when the motor lays over hard on the motor mounts!

Wheel bearings are supposed to be occasionally maintained. Motor mounts never.

Motor mounts fail lots more often than wheel bearings.

Acknowledge that faulty previous maintenance of wheel bearings is possible.

__________________
Kent Christensen
Albuquerque
'07 GL320CDI, '10 CL550. '01 Porsche Boxster
Two BMW motorcycles

I'll eat a crow when motor mounts make a whirring sound from the wheels on a turn. Wheel bearings can squeak, "whirr", rumble, scrape, you name the sound and they'll make it. Going around turns puts pressure on the bearings and stresses them. OP's brakes could be scraping as well.

You would notice a bad motor mount during idle when it is jerking back and forth.

__________________
TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

Aww, just jack up the front end and start turning the wheels by hand. It could be wheel bearings as previously stated, but it could also be something silly like a separated brake pad or a hanging caliper. My guess is that if you poke around down there for a few minutes the problem will jump right out at you.

__________________
-tp


1990 300SE "Corinne"- 145k daily driver - street modified differential - PARTING OUT OR SELLING SOON - PORTLAND OR. AREA - PM ME FOR DETAILS
1988 560SEL "Gunther"- 190K passes anything except a gas station
1997 S420 - 265k just bought it with a rebuilt trans. Lovely condition