Roof Rack - Is it Really a Risk?

[DrDiesel1]

Exactly. We don't know who installed it, for example. As noted above, it can be a little tricky to do so best left to Tesla to put it on properly.

Tesla SC installed it. Like I said in my other post. Please READ it correctly.
There is no doubt, the rack cracked the glass.

 

[DrDiesel1]

Not enough info to determine the root cause from a single photo.

Some folks just can't understand the simple facts before their eyes. OMG!

 

[DrDiesel1]

The action of the rack mount is to pull up on the mount tab while pushing down on the frame. There is no action on the glass.

It's known as stress and flex from weight and load shift. Glass can't flex like steel and remain intact.

 

[ngng]

It's known as stress and flex from weight and load shift. Glass can't flex like steel and remain intact.

The fact that you think the cross bars actually contact the glass is telling.

 

[DrDiesel1]

The fact that you think the cross bars actually contact the glass is telling.

Did I say that ? The fact that you didn't read my post is even more telling

 

[3sr+buyer]

Here is the thread from which the photo of the cracked roof glass was included:

Cracked roof, any chance it's covered under warranty?

I discovered my 23 MYLR roof is cracked. Three questions: Is there any safety risk if I continue driving this for a while (see below)? Any chance this is covered under Tesla's warranty or should I just move ahead with an insurance claim with AAA? Is it important/essential to get this repaired by...

teslamotorsclub.com

 

[QtownTaxiGreg]

It's known as stress and flex from weight and load shift. Glass can't flex like steel and remain intact.

You are seeing forces that are real but imagining them appearing in the glass. The frame is made to be stiff enough under dynamic vehicle conditions that the roof remains in one piece, doors don't creak etc, roof rack or no.

A couple of hundred pounds on the roof isn't going to wreak merry hell on a frame that can drive over a bump at 100mph and launch a wheel without breaking a window.

It's the hardware contacting the glass. Either over torqued or faulty weld of the bracket.

 

[jeffkruse]

I leave my racks on my Y. Only issue was incompetent Tesla service trying to install them. I notice no change in range and only a little whistle above 75 mph. I wouldn’t do a 4x8 sheet on top but two kayaks np.

 

[DrDiesel1]

You are seeing forces that are real but imagining them appearing in the glass. The frame is made to be stiff enough under dynamic vehicle conditions that the roof remains in one piece, doors don't creak etc, roof rack or no.

A couple of hundred pounds on the roof isn't going to wreak merry hell on a frame that can drive over a bump at 100mph and launch a wheel without breaking a window.

It's the hardware contacting the glass. Either over torqued or faulty weld of the bracket.

I'm not imaging anything. The fact is, the glass has cracked from stress. That is all I need to know. YMMV!

 

[QtownTaxiGreg]

I'm not imaging anything. The fact is, the glass has cracked from stress. That is all I need to know. YMMV!

You might be surprised how flexible glass can be when it is twisted.

I was opposite some big glass windows of the shop in ground floor of office block. A mild earthquake had the building doing the boogie woogie and the glass was all over the place. Stayed in one piece though.

A point force killed that roof glass.

 

[ucmndd]

The fact is, the glass has cracked from stress.

This is a "fact" which you have 100% manifested out of thin air based on a single photograph posted by an anonymous third party. You must have a different definition of fact than I do.

 

[QtownTaxiGreg]

Fun fact. Your windscreen is a structural element of your car. It assists in the rigidity of the whole. I wouldn't mind betting the Tesla glass roof is also a structural element.