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General Discussion
Undersized Rotors
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<blockquote data-quote="mark" data-source="post: 1485431" data-attributes="member: 16354"><p>I just picked up a set of Bronco/F150 hubs and rotors, I was hoping to use them as-is but I just measured them, the "discard" is 1.22, they measure out at 1.21 and could probably use a clean up so they will get a little thinner.</p><p></p><p>The "correct" way is to replace them, but I'm being a cheap ass and have other fixes I would rather spend money on this round (I'll replace them later). So, for a pure wheeling rig, what is the potential catastrophic failure running rotors that are under the discard thickness?</p><p></p><p>I'll be using Chevy 1/2 ton calipers, and the pads are pretty much new. I'll have to check the discard thickness of a set of Chevy rotors and see if there is any difference. I'm really wondering if the discard is more for safety factor and liability. I've seen pictures of people that have run rotors to the cooling ribs, and if this was a street rig i wouldn't even ask since you need the mass for heat dispersion. Is there even a concern about the calipers running out of travel? But I wouldn't think so as the amount of slop built in with the thickness of the pads.</p><p></p><p></p><p>Its only about $80 for a new set of rotors, so I might bite the bullet anyway, but as I was looking at them, and the amount of meat left on them, I got thinking of what tolerance there actually is in them.</p><p></p><p></p><p></p><p>Thoughts?</p></blockquote><p></p>
[QUOTE="mark, post: 1485431, member: 16354"] I just picked up a set of Bronco/F150 hubs and rotors, I was hoping to use them as-is but I just measured them, the "discard" is 1.22, they measure out at 1.21 and could probably use a clean up so they will get a little thinner. The "correct" way is to replace them, but I'm being a cheap ass and have other fixes I would rather spend money on this round (I'll replace them later). So, for a pure wheeling rig, what is the potential catastrophic failure running rotors that are under the discard thickness? I'll be using Chevy 1/2 ton calipers, and the pads are pretty much new. I'll have to check the discard thickness of a set of Chevy rotors and see if there is any difference. I'm really wondering if the discard is more for safety factor and liability. I've seen pictures of people that have run rotors to the cooling ribs, and if this was a street rig i wouldn't even ask since you need the mass for heat dispersion. Is there even a concern about the calipers running out of travel? But I wouldn't think so as the amount of slop built in with the thickness of the pads. Its only about $80 for a new set of rotors, so I might bite the bullet anyway, but as I was looking at them, and the amount of meat left on them, I got thinking of what tolerance there actually is in them. Thoughts? [/QUOTE]
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