Strong Vibration at speed

dreptroman · 07-15-2016, 02:31 PM

Hi guys.

I have been trying to solve an issue that came up a while ago.

I have a vibration in the car, a bad one after 90 100 mph.

I have new tyres, new bushings, new brake rotors and pads.

I have a larger than specs rear tyres as 265/35/18 instead of 255/35/18.

This increases the diameter a little bit. I have been trying to figure it out. All wheelshave been balanced 3 4 times as i cannot resolve it. The rims are in order as well.

The only cause I can think now is the tyre size.

Can this rear tyre size be an issue and cause a vibration?

Thanks.

Any pointers would be appreciated...

VMRWheels · 07-15-2016, 07:21 PM

It doesn't sound like a tire size issue. First thought would be balancing, but you say you've had that done multiple times. Are you using spacers? Aftermarket wheels? Are they hub centric? Can you isolate the vibration to one specific tire/wheel?

bmw325i · 07-16-2016, 04:25 PM

Quote:

Originally Posted by VMRWheels

It doesn't sound like a tire size issue. First thought would be balancing, but you say you've had that done multiple times. Are you using spacers? Aftermarket wheels? Are they hub centric? Can you isolate the vibration to one specific tire/wheel?

+1 make sure the wheels have the correct size bore. Tire sizing wouldn't cause a vibration. Have you had the wheels road force balanced.

07-15-2016, 02:31 PM	#1
dreptroman Private 10 Rep 50 Posts Drives: 320d Join Date: Mar 2011 Location: Sofia iTrader: (0)	Strong Vibration at speed - Larger Tyres installed HELP Hi guys. I have been trying to solve an issue that came up a while ago. I have a vibration in the car, a bad one after 90 100 mph. I have new tyres, new bushings, new brake rotors and pads. I have a larger than specs rear tyres as 265/35/18 instead of 255/35/18. This increases the diameter a little bit. I have been trying to figure it out. All wheelshave been balanced 3 4 times as i cannot resolve it. The rims are in order as well. The only cause I can think now is the tyre size. Can this rear tyre size be an issue and cause a vibration? Thanks. Any pointers would be appreciated...
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07-15-2016, 07:21 PM	#2
VMRWheels BimmerPost Supporting Vendor 2043 Rep 25,989 Posts Drives: BMW Join Date: Jun 2007 Location: Anaheim, CA iTrader: (4) Garage List 2013 BMW M3 [10.00] 2015 BMW M4 [0.00] 2013 BMW F30 [0.00] 2014 BMW F22 [0.00] 2013 BMW F06 [0.00]	It doesn't sound like a tire size issue. First thought would be balancing, but you say you've had that done multiple times. Are you using spacers? Aftermarket wheels? Are they hub centric? Can you isolate the vibration to one specific tire/wheel? __________________ VMR\|Wheels \| 714.442.7916 \| sales@velocitymotoring.com \| www.velocitymotoring.com \| facebook \| flickr \| Instagram
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