TJ Tire Wear.... - JeepForum.com
 
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post #1 of 10 Old 02-10-2016, 10:04 AM Thread Starter
20jeepster10
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TJ Tire Wear....

OK So before I bought new tires I installed my Mopar Rock Crawler Front Bumper, A Harbor Freight 12K winch then I replaced all of the tie rods and went to a well rated shop to get an alignment, They lined it all up and now 5000 miles later I am starting to get some "feathering" on my front tires. the Jeep is still running straight and smooth on the road but I am concerned that my front springs and shocks are now sagging and causing wear from the weight added to the front. (noticeably lower in the front now approx. 1"), is this possible?
any suggestions, i do plan to lift it this coming summer but until then...

2004 TJ Rubicon Stock size tires
192000 miles

Thanks
Dennis

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post #2 of 10 Old 02-10-2016, 10:11 AM
SHoppe715
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Is the feathering to the inside or outside of the tread blocks? That'll tell you if it's a toe in/out problem. With that many miles I'd suspect maybe ball joints? Do you know how many miles on those? The alignment shop should've caught that if they were going bad, but you never know. They might not have lifted the front off the ground to check them.
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post #3 of 10 Old 02-10-2016, 03:28 PM
TheBoogieman
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Sagging doesn't affect the alignment.

Quote:
Originally Posted by mrblaine View Post
The little magic fairies I grind up and use for the BMB pads have to be toasted first and that turns them a very dark brown color which produces a near black dust when you brake so it shows up easier.
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post #4 of 10 Old 02-10-2016, 06:00 PM
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Quote:
Originally Posted by TheBoogieman View Post
Sagging doesn't affect the alignment.
Net lift height doesn't change toe with inverted Y steering?

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post #5 of 10 Old 02-10-2016, 06:47 PM
wingless
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Why not just get some measurement tools, find a level surface and check the alignment yourself.

The tools I use are the Wayne Mitchell Engineering Camber / Caster Gauge and the Manco Wheel Alignment Gauge.

There is one level spot in my driveway and I mark the 20 and straight ahead on the ground, then measure, then adjust as-required.

It is not as easy as tossing someone the keys, but I know exactly how the wheels are set when I'm done.




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post #6 of 10 Old 02-11-2016, 12:39 AM
TheBoogieman
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Quote:
Originally Posted by biffgnar View Post
Net lift height doesn't change toe with inverted Y steering?
I've never had to re-align my front toe after adding a winch,heavy bumper or riding fat girls around town. Only had to after adding more lift.

Quote:
Originally Posted by mrblaine View Post
The little magic fairies I grind up and use for the BMB pads have to be toasted first and that turns them a very dark brown color which produces a near black dust when you brake so it shows up easier.
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post #7 of 10 Old 02-11-2016, 01:11 AM
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Quote:
Originally Posted by TheBoogieman View Post
I've never had to re-align my front toe after adding a winch,heavy bumper or riding fat girls around town. Only had to after adding more lift.
Added weight to the front of the TJ requires toe alignment to compensate for the suspension with the inverted "Y" steering setup...
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post #8 of 10 Old 02-11-2016, 05:15 AM
TheBoogieman
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Quote:
Originally Posted by Knuckelhead View Post
Added weight to the front of the TJ requires toe alignment to compensate for the suspension with the inverted "Y" steering setup...
Good to know.

Quote:
Originally Posted by mrblaine View Post
The little magic fairies I grind up and use for the BMB pads have to be toasted first and that turns them a very dark brown color which produces a near black dust when you brake so it shows up easier.
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post #9 of 10 Old 02-11-2016, 09:44 AM Thread Starter
20jeepster10
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thanks for the responses,
the tires are feathering on a angle towards the inside, the drivers side is worse than passenger.
I used a good shop that does a lot of plow trucks etc... they say the ball joints were good and within the spec. i believe its the sagging because i only have about 1"
of travel before hitting the bumpstops, which happens all the time here in michigan with the really bad roads. so i am going to have to replace at least the springs and shocks soon. and i will get a realignment again .
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post #10 of 10 Old 02-11-2016, 01:03 PM
TheBoogieman
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Quote:
Originally Posted by 20jeepster10 View Post
thanks for the responses,
the tires are feathering on a angle towards the inside, the drivers side is worse than passenger.
I used a good shop that does a lot of plow trucks etc... they say the ball joints were good and within the spec. i believe its the sagging because i only have about 1"
of travel before hitting the bumpstops, which happens all the time here in michigan with the really bad roads. so i am going to have to replace at least the springs and shocks soon. and i will get a realignment again .
Is your RC 4" lift with adjustable control arms or fixed arms? The toe is the only thing that can be adjusted with fixed arms and it takes 10 minutes to DIY.

http://www.4x4xplor.com/alignment.html

Quote:
Originally Posted by mrblaine View Post
The little magic fairies I grind up and use for the BMB pads have to be toasted first and that turns them a very dark brown color which produces a near black dust when you brake so it shows up easier.
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