After 1200 mile run in service I now have a noise.

IMOLA*20th · 12-04-2022, 08:27 AM

QQ for any ideas. Had my 1200 mile run in service and had Michelin Pilot AS 4s put on for the winter about 3 weeks ago. When I got it back I had a faint buzz hum coming from what I think is the front (wife says it is behind me or under me in the drivers seat). It has gotten progressively worse and now can be heard over the radio. It sounds like I have mud tires on the front. I would say the noise is similar to putting a playing card in your bike spokes as a kid and going really fast. Because it has gotten progressively worse I do not think it is the tires (in addition this is my 5th set of these tires and never had an issue). BMW says it is the tires, but is having their master tech look at it this week.

Should I be concerned that maybe they didn’t fill the front diff during the run in service or something else? I am baffled. It is loudest at 45 mph and does not change when the car is in neutral coasting. The sounds gets louder with speed and does not change when swerving or turning hard.

I removed the tires and inspected them and rotated side to side and no change. I am calling Tire Rack in the morning to see about replacement but now the tires are back ordered.

redcarrera · 12-04-2022, 08:50 AM

FWIW, I just installed AS4's a couple of weeks ago. They are just as quiet as the 4S's.
Hope you get this sorted.

M5KEITH · 12-07-2022, 08:20 AM

I would check to see if your new tires need to be rebalanced. If that is not it then take if back to dealer and let them sort it out.

Maverik259 · 12-08-2022, 09:04 AM

does the noise increase with speed? sounds like the tires. maybe you got a bad one?

IMOLA*20th · 12-09-2022, 06:56 PM

Just got the car back. Bad driver’s front wheel bearing. Replaced and all good now. Pretty crazy for only 2k miles.

rsingh7 · 01-06-2023, 10:08 AM

I had a slight humming noise when I bought my car and drove it before the break in service. I was making turns to see if it was the bearing, but it only happend at 55-58MPH.

After the break in service and change of the differential oil the noise went away. Just posting my findings.

12-04-2022, 08:27 AM	#1
IMOLA*20th Enlisted Member 5 Rep 33 Posts Drives: 2023 X5M, former M5 & X4M Join Date: Nov 2010 Location: Iowa iTrader: (1)	After 1200 mile run in service I now have a noise. QQ for any ideas. Had my 1200 mile run in service and had Michelin Pilot AS 4s put on for the winter about 3 weeks ago. When I got it back I had a faint buzz hum coming from what I think is the front (wife says it is behind me or under me in the drivers seat). It has gotten progressively worse and now can be heard over the radio. It sounds like I have mud tires on the front. I would say the noise is similar to putting a playing card in your bike spokes as a kid and going really fast. Because it has gotten progressively worse I do not think it is the tires (in addition this is my 5th set of these tires and never had an issue). BMW says it is the tires, but is having their master tech look at it this week. Should I be concerned that maybe they didn’t fill the front diff during the run in service or something else? I am baffled. It is loudest at 45 mph and does not change when the car is in neutral coasting. The sounds gets louder with speed and does not change when swerving or turning hard. I removed the tires and inspected them and rotated side to side and no change. I am calling Tire Rack in the morning to see about replacement but now the tires are back ordered.
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12-04-2022, 08:50 AM	#2
redcarrera Private 41 Rep 56 Posts Drives: '21 M5C, RR HSE, GLS450, C4S Join Date: Nov 2020 Location: Castle Rock, CO, Bigfork, MT iTrader: (0)	FWIW, I just installed AS4's a couple of weeks ago. They are just as quiet as the 4S's. Hope you get this sorted.
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12-07-2022, 08:20 AM	#3
M5KEITH Second Lieutenant 130 Rep 214 Posts Drives: M5 Join Date: Jan 2021 Location: Massachusetts iTrader: (0)	I would check to see if your new tires need to be rebalanced. If that is not it then take if back to dealer and let them sort it out.
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12-08-2022, 09:04 AM	#4
Maverik259 Major General 4140 Rep 7,160 Posts Drives: F90 M5 / F15 50i Join Date: Jun 2017 Location: Virginia iTrader: (1) Garage List 2020 BMW M5 [10.00] 2014 X5 50i [0.00]	does the noise increase with speed? sounds like the tires. maybe you got a bad one? __________________ '07 Yamaha R1 (sold) '06 C55 AMG (sold) ‘?20 M5, MP Carbon Pro Spoiler, MP Carbon Diffuser, MP Black grille and gills, MP Carbon Mirrors, CF side sills, 789M w/ Ti studs, eventuri, Dinan X pipe '14 X5 50i (wife’s now)
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12-09-2022, 06:56 PM	#5
IMOLA*20th Enlisted Member 5 Rep 33 Posts Drives: 2023 X5M, former M5 & X4M Join Date: Nov 2010 Location: Iowa iTrader: (1)	Just got the car back. Bad driver’s front wheel bearing. Replaced and all good now. Pretty crazy for only 2k miles.
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01-06-2023, 10:08 AM	#6
rsingh7 Enlisted Member 12 Rep 31 Posts Drives: 2023 M5 Join Date: Oct 2017 Location: Jericho, NY iTrader: (0)	I had a slight humming noise when I bought my car and drove it before the break in service. I was making turns to see if it was the bearing, but it only happend at 55-58MPH. After the break in service and change of the differential oil the noise went away. Just posting my findings.
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