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Front tire rub to sway bar

Old 10-24-2018, 07:10 AM
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Car: 1991 Pontiac Firebird Trans Am
Engine: 5.7L TPI
Transmission: 4 speed 4L60/700R4
Front tire rub to sway bar

I have a 1991 T/A. Has stock rims with stock 245/50/16's. Offset 0's in front and 16's in the back. Front end components are either new or have been checked to be fine by two shops. Has been aligned and is within spec. Only apparent non-OEM front end are the lower control arms (tubular instead of the OEM stamped). Car does not appear to have been in any collisions. Problem is that when turning and getting to about 90% full turn, the tires rub on the sway bar.....hard. Any ideas? I'm sort of at a loss on this one.
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Old 10-24-2018, 08:00 AM
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Front tire rub to sway bar

Are the stops on the control arms correctly hitting the spindles ?
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Old 10-24-2018, 11:46 AM
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Car: 90 Formula / T-tops
Engine: 305 TPI
Transmission: 700R4
Re: Front tire rub to sway bar

I thought the WS6 setup rubbed up front on full hard turn. Havevn't done one in a long time, don't recall exactly what the circumstances are to create it and if it was on one side only or both.
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Old 10-24-2018, 05:30 PM
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Car: 86 Trans Am, 92 Firebird
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Axle/Gears: Moser 9", 3:70 trutac, 3:23 torsion
Re: Front tire rub to sway bar

Sounds pretty simple. The tubular arms are either built wrong, or lack steering stops which the factory arms had. The wheels are turning more than they should and are hitting the bar. If the tubular arms have stops, they need to be lengthened.
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Old 01-06-2019, 02:50 PM
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Re: Front tire rub to sway bar

That is a factory option... err.. factory design flaw. My car rubbed on the fender wells since new. There was a service bulletin on it.
However, I'd have to look at the sway bar for rub marks. I believe there are.
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Old 01-06-2019, 11:08 PM
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Re: Front tire rub to sway bar

Hardly a car in the 80's that didn't rub with wide tires on it. They all do. Not a issue, it really will not hurt anything other then shine the swaybar in a spot.
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Old 01-08-2019, 12:33 PM
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Car: 1992 Z28 Targa Top. Full air ride
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Re: Front tire rub to sway bar

My car does the same thing but I know the issue. Sure doesn't hurt anything but it's annoying as hell.
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