Hello...I have had my 78 450Sl for about a month and it's time for new tires. I have heard that on some cars it is NOT good to jack it up with the hard top off. I have a Porsche 928 and they say not to jack it up with the doors open or it will break the windshield. I'm going to keep the doors closed but I was wondering if anyone has heard anything bad about jacking 450SL's up with the hard top off. It was 80 here today so I don't want to put it back on unless I have to.

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THANKS......Dave