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Old 09-09-2021, 11:09 AM   #1
Luthin
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Default Rear Tire Wear

Anyone know what causes a rear tire to wear like this?

https://imgur.com/a/5lqWtka
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Old 09-09-2021, 01:32 PM   #2
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Default Re: Rear Tire Wear

Yes, your rear struts are completely shot causing the tire to bounce. Replace them.

https://www.rockauto.com/en/catalog/...assembly,15174
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Old 09-09-2021, 02:06 PM   #3
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Default Re: Rear Tire Wear

Struts? I wouldn't have guessed that one! Thank you for the quick reply.

Is there any rear alignment to speak of on these cars? Or just remove the struts, bolt the new ones in, and good to go?
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Old 09-10-2021, 02:01 AM   #4
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Default Re: Rear Tire Wear

Camber & toe in the rear, just like the front. Pretty sure the caster is locked in without either bent struts or drilled strut mount bolt-holes.
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Old 09-11-2021, 10:39 AM   #5
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Default Re: Rear Tire Wear

Most aftermarket strut assemblies will have the lower bolt hole slotted for additional alignment adjustments.
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Old 09-24-2021, 02:30 PM   #6
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Default Re: Rear Tire Wear

Thanks guys. Is it possible to get these alignments reasonably close in the home garage? Close enough so that it doesnt chew through tires or pull drastically to one side is all I care about.
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Old 09-25-2021, 09:07 AM   #7
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Default Re: Rear Tire Wear

Toe is pretty easy to set at home with flat/level concrete. Square up a string box around the car at the tire/wheel radius height and measure to both sides of the tire (front/rear "sides" not in/out "sides"). The hard part will be adjusting toe without screwing up the string box.

Camber is fairly simple, though getting an angle finder that's accurate to .01" can be hard without spending more than a 4-wheel computer/laser alignment costs. Cheap angle finders goto 90 or 180 while a normal road alignment only needs 6 total (+/- 3) and the one I had found has virtually no accuracy under 1.

You'll also want a couple 1ft squares of plastic to park the car on, preferably with a bit of grease between the layers. This will let the tire spin/turn on the floor easier.

Better guide than I can type up lol : https://blog.fcpeuro.com/at-home-ali...align-your-car

Though... "The distance from string to wheel should only be the same between the front wheels and the rear wheels. The front and rear suspension have different track widths, so the distance away from the string won't match front to rear." could be a bit confusing. Each front wheel should measure the same and each rear wheel should measure the same but the front measurement won't match the rear.
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Old 09-26-2021, 12:27 PM   #8
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Default Re: Rear Tire Wear

Thanks Fetch. I'll give it a try and see how it goes.
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