Is it magnified by brake issues, like warped rotors or other?
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Dec. 13, 2010 9:16 p.m. SVreX SuperDork
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Dec. 14, 2010 6:34 a.m. wreckerboy SuperDork
Have you checked the radius rod bushings? These are notorious wear points on the twin-I beam setup ("Look Ma! All the advantages of a swing axle Corvair except on the front of the truck!") and can lead to all sorts of goofy wear pattern issues.
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Dec. 14, 2010 6:50 a.m. foxtrapper SuperDork
1 on the bushings. As well the steering. Things deflect under braking, but appear normal while just sitting there. It'll spec correct toe on the machine all day long, but be wrong while you're stepping on the brakes. I've seen it more than once.
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Dec. 14, 2010 10:49 a.m. iceracer Dork
As many have said, it sounds like normal wear from a traction type tire.
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Dec. 14, 2010 12:39 p.m. AngryCorvair SuperDork
SVreX wrote:
Is it magnified by brake issues, like warped rotors or other?
no, it has nothing to do with worn components or other brake issues.
when you hit the brakes, the tire slows down at the road and the tread block distorts as the forces go from the road back through the tire and wheel and up to the suspension to the body. from the POV of the hub, each tread block is distorted rearward at the road surface because of the braking forces being applied. as the front edge of the tread block is shoved rearward, the rear edge of the tread block lifts up from the road.
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Dec. 14, 2010 3:24 p.m. scardeal Reader
I'm not an expert, but if you're having issues with the tire itself, why not try a different brand/model of tire?
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Dec. 14, 2010 6:18 p.m. SVreX SuperDork
AngryCorvair wrote:
SVreX wrote:
Is it magnified by brake issues, like warped rotors or other?
no, it has nothing to do with worn components or other brake issues.
when you hit the brakes, the tire slows down at the road and the tread block distorts as the forces go from the road back through the tire and wheel and up to the suspension to the body. from the POV of the hub, each tread block is distorted rearward at the road surface because of the braking forces being applied. as the front edge of the tread block is shoved rearward, the rear edge of the tread block lifts up from the road.
So, a heavier vehicle, plus deeper than regular highway tread blocks = Worn tires on braking. That actually makes some sense.
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Dec. 15, 2010 10:28 a.m. AngryCorvair SuperDork
SVreX wrote:
So, a heavier vehicle, plus deeper than regular highway tread blocks = Worn tires on braking. That actually makes some sense.
That's what I'm here for.
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Dec. 15, 2010 12:27 p.m. 93gsxturbo HalfDork
My Baja Claws do the same thing on my 1996 Dodge Ram 2500 Diesel. Every single nut, bolt, bearing, shock, spring, bar, rotor, caliper, pad,etc in the front end is new in the last 35k miles and I switched it to crossover (inverted T) steering, which made a huge difference in how well it goes down the road.
I rotate the tires every oil change as previously suggested, seems to take care of it good enough, considering Baja Claws are not really made for the weight of a Cummins Diesel.
