[XRAVE]

I have about 6000 miles and recently started to notice a shake at 70-80mph. Most noticeable when coming off the throttle, can be felt through the seats and steering wheel. Passenger also can feel it shaking.

I know its probably a wheel balance issue but I cant seem to find the missing wheel weight. None of the rims seem to be bent and I haven't hit any curbs. Is it possible to narrow down which wheel isn't balanced or is it better just to have them all balanced? I did plug a hole in the back tire, not sure if that could have changed the balance.

Also noticed that I have a squeak coming from the wheels at low speed. Happens once a rotation and increases frequency as I speed up. Not sure if this is related.

[bimmer456]

Get it looked at. Could be the tires need replacing due you do burnouts or race a lot?

[XRAVE]

Originally Posted by bimmer456

Get it looked at. Could be the tires need replacing due you do burnouts or race a lot?

Tires are surprisingly in good shape.

[5ilver-5amurai]

Originally Posted by XRAVE

I have about 6000 miles and recently started to notice a shake at 70-80mph. Most noticeable when coming off the throttle, can be felt through the seats and steering wheel. Passenger also can feel it shaking.

I know its probably a wheel balance issue but I cant seem to find the missing wheel weight. None of the rims seem to be bent and I haven't hit any curbs. Is it possible to narrow down which wheel isn't balanced or is it better just to have them all balanced? I did plug a hole in the back tire, not sure if that could have changed the balance.

Also noticed that I have a squeak coming from the wheels at low speed. Happens once a rotation and increases frequency as I speed up. Not sure if this is related.

Obvious culprits that come to mind are (some you've already identified)...
1) Wheel balancing
2) Wheel bearing issue
3) Uneven wear on tires
4) Tire grade / rating (winter tires do this sometime)

[hollandog]

most likely due to wheel balance. last time I had shaking when there was ice built up in the wheel after snow donut.

[DrifterX]

Did you re-balance the wheel where you plugged the hole? If you didn't, I'd recommend you start there.

If the problem still persists, unmount and re-balance all tires - check for wheel movement while you have the car in the air as well (to identify hub bearing damage).

Next check your brakes: pads, pad wear indicator, rotors. May be pre-mature brake wear or warped rotor but highly unlikely.

If all else fails, you'd better get it to a dealer for inspection.

[2016340iMSport]

Same issue here but no squeak coming from the wheels (3400 miles) when switched from stock Conti RFT to MPSS 245/40/18. Bought at Discount Tire, they found 1 tire off by 1/2 ounce and re-balanced all 4 but still have the same issue. Taking it to a local shop to inspect alignment and perhaps road force balancing

[metallicpea]

I would start by taking it to a reputable tire shop with up to date equipment and have the tires balance. Most likely the front. Ask them to watch and make sure the rim is true while it is spinning.

[2016340iMSport]

Looking to do so this Friday, hopefully easy fix, thanks

[XRAVE]

I just found out I can take in my car for service when indicator shows 2000 miles to go. Currently at 2000.

Will hopefully get this diagnosed along with the squeaking.

[la02max]

Check your wheel bolts. I left mine un-torqued once on my e36 and had the exact same symptoms, particularly in gear and off the throttle.

[XRAVE]

Originally Posted by la02max

Check your wheel bolts. I left mine un-torqued once on my e36 and had the exact same symptoms, particularly in gear and off the throttle.

Will check that, recently took off the rear to plug. Was on the side of the road so I may have under torqued 1 of the bolts

[tsbrown]

Originally Posted by XRAVE

I have about 6000 miles and recently started to notice a shake at 70-80mph. Most noticeable when coming off the throttle, can be felt through the seats and steering wheel. Passenger also can feel it shaking.

I know its probably a wheel balance issue but I cant seem to find the missing wheel weight. None of the rims seem to be bent and I haven't hit any curbs. Is it possible to narrow down which wheel isn't balanced or is it better just to have them all balanced? I did plug a hole in the back tire, not sure if that could have changed the balance.

Also noticed that I have a squeak coming from the wheels at low speed. Happens once a rotation and increases frequency as I speed up. Not sure if this is related.

You typically feel shake/imbalance in the front tires through the steering wheel and rear tires through the seat. Most tire manufacturers recommend not plugging runflats, I think more for tire integrity than for balance. But it might affect balance. I've had Michelin Pilot Super Sports (go-flats) internally patched with no balance issues. You might want to check for sidewall bubbles in case you hit a pothole.

edit..just noticed you have track package so likely Conti or Michelin go flats

[XRAVE]

Originally Posted by tsbrown

You typically feel shake/imbalance in the front tires through the steering wheel and rear tires through the seat. Most tire manufacturers recommend not plugging runflats, I think more for tire integrity than for balance. But it might affect balance. I've had Michelin Pilot Super Sports (go-flats) internally patched with no balance issues. You might want to check for sidewall bubbles in case you hit a pothole.

edit..just noticed you have track package so likely Conti or Michelin go flats

Yea I have the MPSS non run flats.

I just noticed that the rear passenger tire was the 3-4 psi lower than all other tires. Could this have caused the the shake?

[insanecoder]

Is it consistently a shake at 70 mph?
Get your tires inflated to the same pressure and try again.. get that out of the way
if still problems
inspect the treads to see if even no bulging/depressions if so then its likely the tire
if tires good then its likely off balance which is clued in on by consistent shakes at a certain speed.. get the balance checked
if its not the balance then get BMW service to check it out

[BEM-S4]

Check for a bent rim as well

[2016340iMSport]

road balanced all 4 tires, with spec, FR balance off 1.5 ounces and RR by .5, so far so good

[XRAVE]

Originally Posted by 2016340iMSport

road balanced all 4 tires, with spec, FR balance off 1.5 ounces and RR by .5, so far so good

What'd you end up paying for 4 tires balanced?

Just got the car back from BMW after oil service and they said they couldn't find anything wrong aside from testing the balance. Braking system was our first thought since it only happened when coming off the throttle.

They wanted 150$ for the balance so I said I'll just take it elsewhere for that.

[2016340iMSport]

I paid $150 forced road balance at a local import shop. I have also been playing with lowering tire pressure on all 4 moving closer to BMW psi listed.