Chalk test

tjstellar

New Member
Original poster
Joined
Oct 24, 2024
Messages
3
Location
Florida
Just have a quick question. Just installed 31x10.5 on my stock tj. My chalk test on all 4 tires show wear even throughout middle and inner yet the outer edge of the tire has chalk on it 29Psi
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I don’t have experience doing chalk tests but I can tell you that the front WMS is set to have a slight negative camber (wheels tilted inwards at the top). So intuitively I would expect similar results from the front tires. As for the rear, maybe they have just been rotated front to rear and show the same wear. I’m not 100% confident on this though.
 
I don’t have experience doing chalk tests but I can tell you that the front WMS is set to have a slight negative camber (wheels tilted inwards at the top). So intuitively I would expect similar results from the front tires. As for the rear, maybe they have just been rotated front to rear and show the same wear. I’m not 100% confident on this though.

They are actually freshly installed. Not sure if it's the tire design or just too much pressure but the inside and middle are even
 
I just use chalk to draw on the sidewalk, so I am no expert. But maybe put some attention to this failing part.

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