There was an earlier thread on this. May help
http://www.mclarenlife.com/forums/mclaren-650s/36569-steering-wheel-vibration.html

 

That thread ended with wheel balancing. I'm hoping this is all it is. It's pretty strong vibration, not just steering wheel. The whole car shakes.

 

Yes. If it is not wheel or tire related then it could be brake, steering or suspension related. Brake vibration occurs or is initiated when the brakes are applied—so from your problem description brakes can be excluded. Steering and suspension problems are usually worn component related. If your car is relatively new and has not been heavily tracked then wear is unlikely. So that leaves loose components—check for loose bolts, any steering links, suspension parts that seem loose.
Hope you find what’s wrong soon.

 

My car was doing that. It wasn’t the tires or the alignment. There is some sort of foam pads on the inside of the tires that fell off. I think they are used to make the ride more comfortable etc.
They replaced the tires under warranty and it solved the issue.

 

The Pirelli noise reduction system has foam sections glued on the inside and of the tire. Sometimes these can come loose causing weight to collect in a certain location which then creates a balancing issue.

 

Have the tire shop check your wheels for balancing. You might of lost a wheel weight or could have a bent wheel. A bent wheel is easy to spot while spinning on the tire balancing machine. make sure the wheels are balanced to "zero". the tire guys will know exactly what that means...

 

My 570GT has had the same problem since new. Returned it to the dealer, who used the 'road force' (not sure that is the right wording) technique. Car is better now, but far from perfect. Imbalance still prevalent above 80mph. My wife says it's my built-in speed governor! I tell her it goes away above 100.

 

Almost always wheel balancing. The dealers assume they come balanced from the factory which is a bad assumption and they dont necessarily check them.

 

This happened on my 720 at 65 mph to 217 mph. The toe in was 1 degree the wrong way and the tyres out of round which was solved by inflating them to 80 psi whilst off the ground for 12 hours. Can be disks, balance etc.

All good now so I can cruise at 217 mph in comfort.

 

Tire guy told me that the foam was there to 'deaden' road noise. Suppose to zero out road-tire sound. ???? He then told me causing a lot of problems on fast cars, b/c the tires spin so fast, the foam breaks loose and flies around within. Don't know how heavy the foam blocks are, but apparently the velocity or something causes great tire disruption.

 

Funny, they are Z rated tires. Pirelli, FAIL

 

It is definitely the foam issue. I had the foam removed and the high speed vibration is gone.

 

Me too +1

 

Here is a quick photo of the foam for those that have never see it.

 

Just mounted a new set of Corsas on my 570S and had the foam removed before installation. Don't really see any difference in road noise at this point.

 

Good reason to switch to Michelin ps4 when my stockers are shot

 

Message me if you are interested in a new set of R888R for the 570. It is a much better tire than the Corsa. The front is 235/35/19 and rear is 285/35/20. Smoking deal for anyone that needs them. I do not need them since I purchased Forgelines and moved to 245 front and 305 rear. I purchased these R888R for my stock wheels but went forward and just got a complete new set of wheels.

 

Just to update. I got all four replaced with new corsas. Tech guy at dealership didn't remove foam from the new ones and said the new tires have updated foam and glue so it shouldn't be a problem anymore. Let's hope so...

 

I just went through the exact same situation: vibration at high speeds, which was fixed by removing the foam from the rears (the fronts haven't failed as of yet.)

Here's a photo for reference.