Vibration after 45 mph

[Beach Bum]

I need some advise. I recently purchased a 2016 Mustang GT with the 20' wheels and the Pirelli tires. The problem I'm experiencing is that I get a small vibration after about 45/50 mph. It goes away after 60 mph. My car didn't come with the strut tower brace so I bought an OEM one from Ebay.

I had the wheels rebalanced but it did not go away. Could this tires be the source or could it be the brace? Or could it be a bearing issue?

Thanks

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[Pony777]

Just take it to your dealer

 

[Kong76]

Get up to speed and throw it in neutral. If it still vibrates its the wheels/bearings/balance/out of round tire. If it goes away its drivetrain.

 

[GT Pony]

Get up to speed and throw it in neutral. If it still vibrates its the wheels/bearings/balance/out of round tire. If it goes away its drivetrain.

Everything behind the transmission still rotates if you're coasting down the road in neutral. Costing in neutral takes out the engine and everything in the transmission except the output shaft which still rotates while coasting.

Sounds like the OP needs to read this thread:
http://www.mustang6g.com/forums/showthread.php?t=15990

 

[Kong76]

Everything behind the transmission still rotates if you're coasting down the road in neutral. Costing in neutral takes out the engine and everything in the transmission except the output shaft which still rotates while coasting.

Sounds like the OP needs to read this thread:
http://www.mustang6g.com/forums/showthread.php?t=15990

Yea, he would still be left with cv joints,driveshaft,diff... I had an issue like this on my Jeep at a certain speed. Changed wheels, pulled driveshafts, checked suspension went absolutely bonkers for seven months...now it's gone and the Gt in it's place.

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