Vibration between 50 & 70 mph

[69mach1-395]

150 ft-lb?:eyebulge:
My F250 takes that, but I've never seen a normal car that high. What size are the lugs?

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[shahram72]

That's great Enzo, but adding spacers and losing a vibration? That's gotta be a first. Something changed. Your vibration was not the driveshaft then cause you didn't touch that. Are your wheels stock?

 

[Enzo]

That's great Enzo, but adding spacers and losing a vibration? That's gotta be a first. Something changed. Your vibration was not the driveshaft then cause you didn't touch that. Are your wheels stock?

I did have a driveshaft issue I posted here before. They had to re-index it, but something still didn't feel right after there was a constant vibration left and majority of it came from the front wheels. I was shocked because every time I watched CJ pony parts videos and read about it, that the car needed 150lbs of torque for the lug nuts. (I believe it was about a 21mm bolt) I ended up removing them with no effort at all. No matter what I always tight my lugs strong.

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[MikeD1]

150 ft-lb?:eyebulge:
My F250 takes that, but I've never seen a normal car that high. What size are the lugs?

That's the new spec for all the 'stangs .........

 

[347CobraII]

150lbs is correct wheel studs are bigger on 15-up 14mm

 

[shahram72]

You'll never get those off with the stock wrench even if you stand on it. I started carrying around a T-handle wrench in my car since my last unsuccessful tire change.

 

[Enzo]

You'll never get those off with the stock wrench even if you stand on it. I started carrying around a T-handle wrench in my car since my last unsuccessful tire change.

Get it nicely in there and give it a good kick and they come off.

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[fordguys550]

I broke my lug key even at 105ft lbs. AM was nice enough to send me another...i feel like 90 to 100 ft lbs is plenty

 

[347CobraII]

I wouldn't under torque them

 

[fordguys550]

All the cars ive had before are like 85 to 90. Not sure how this car is any differnt

 

[GT Pony]

All the cars ive had before are like 85 to 90. Not sure how this car is any differnt

When the wheel stud diameter is larger, the lug nut needs more torque in order to stretch the stud enough to ensure the nut stays tight. The mechanics of threaded fasteners.

 

[shahram72]

Yeah, follow the manufacturer spec. They don't get everything perfect, but they are amazing engineers.

 

[fordguys550]

Well then somebody at AM needs to know the lug set they sell cant handle 150 ft lbs lol. Thats a crazy amount of tq. I heard it was 125...i didnt know it was 150. Jeez

 

[Enzo]

Well then somebody at AM needs to know the lug set they sell cant handle 150 ft lbs lol. Thats a crazy amount of tq. I heard it was 125...i didnt know it was 150. Jeez

Well 150lbs is factory recommendations. I assume you can also get away with 125lbs. I put the eibach spacers and tried to torque them to 150lbs but almost stripped them.

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[fordguys550]

Yeah thats what i mean. 150lbs is a grip of tq

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