5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
My 98 540 IA has a rumbling noise at low speeds under 20mph.
It sounds like loud tires but it is not. When I open the door I hear the tires and its a different sound. Its not the brakes cause it does with no brake pressure and it does it when the car is off (coasting).
On the highway its fine. Could it be rear bearings, diff, trans?
What would make a louder noise at 10-20mph than at above 30mph. (excluding the increased ambient noise from the increase of speed)
I had Toyo tires before I changed all 4 to Yokohama AVS ES100's.
The Toyos were noisy and were like you said, "rumbling" at low speeds, esp. 20 to 30 mph. Didn't hear them at high speeds. At first I thought they were wheel bearings or rotors, Then everyone told me Toyos sucks!!!
Oh...and tires can sound different from outside and inside the car. Inside the car you hear the "sound effects" thru the wheel wells/arches whereas outside, the sound is dispersed into the open together with the wind etc.
I have a similar issue with my 2000 540i/6. I used to keep the car at the cottage, but now since I put my Z/06 away (insurance got too high), I am driving the 540i for the first time in the city on paved roads. It has a noise not unlike noisy tires, and it does go away at speed.
Maybe I'll try to record the sound and attach the sound file. Anyone want to compare to try to figure out what the noise is?
2002 Corvette Z/06
2000 BMW 540i/6 M-Sport
1988 BMW 325i/5 Cabriolet
1988 Mustang LX 5.0
I run Dunlop SP SPORT 01 rear and sp sport 2000 front on mine and they aren't the quietest of tyre, they stick to the road like shit though. I have been told continental economy tyres are very quiet (and save you money) but don't grip half as well in the dry although are better in the wet - I haven't tried these though, just what I 've been told.
I, also was hoping my tyres would last until I can afford new rims but I ve spent the last 3 months enjoying being able to get the back end out on bends so the rears are now shagged and I have a nail in the front n/s - so I guess it'll be an expensive weekend and the AC Schnitzer 18"'s will have to wait another 6 months.
I had similar problem on my 528I, I did change 2 rear bearings she is very quite now. Also I had the OEM 17" rims on it, replaced them with the original 15" rims and tires no problems whatsoever. I sacrificed the look for what comes original on the car. remember 17" and 235/45/17 tires are too much of a load on these bearing. technically This makes sense to me for the look of it? I am not sure.
So BMW gave the option of 17" rims knowing full well the cars rear bearings couldn't handle the tiny change in weight - Oh no I'll never carry a passenger again or do my shopping in my beamer in case the extra weight buggers it up!
I don'y think the issue is with the weight (like in pounds of passengers or the weight of the 17" rims VS. the 15" .As you know the 17" comes with 235/45/17 tires. What kills the rear bearing and gives you the rumbling sounds is that number of 45 above. more or less the width of the tire that contacts the ground.
Also what gives you those bubles on the outer/inner side wall of the tire is the other number of 235 (low profile) whenever you hit a bump on the road it is most likely the rim hitting the low profile rubber. even if you are very carefull driver.
Now lets do some high school physics: I have two types of tires on a 528I one is 215/70/15 continental which is standard on the E39 and 235/45/17 Michelin as a sport package (never again though) which tire you think has MORE SURFACE AREA? is it the wide 45 or the narrow 70? you guessed it . With that kind of surface area on the 45 tires you talking some serious friction between the rubber and dry pavement; which in turn translates into extra work for the bearings. You simply need more power to turn that wheel.
Slippery when wet? Thats right in addition to kissing goodbuy my traction in winter (again MORE SURFACE AREA slipping on ice. I couldn't make it out of my driveway with the 45s in winter. I don't have that problem anyomore with the 15" so much for surface area.
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