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rotors turned, different thickness


Lsnaple

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So a couple weeks ago I had a caliper seize on me. I decided to have my rotors turned since they are only about a year old and the pads on the seized side looked kinda nasty and I would just feel better with a fresh surface. Looking at my spec sheet after I got them turned, they are a slight different in thickness, before and after.

 

Actual numbers (I'm assuming this is _._ _mm). This is for 2 front rotors:

Before - 946 - 949

 

After - 930 - 933

 

It says discard at 866. I was assuming they would be equal on each side, and I'm slightly worried about it being different but I think I'm just worried for no reason. Technically the pads should wear evenly regardless of thickness because it's a fresh surface and I have new pads. But I'm worried that the slight difference in thickness might want to make the car pull to the side with less rotor. Will it or any other problem show up?

 

It didn't pull before the seized caliper... By the way I'm rebuilding the calipers too and have new pins on order.

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those numbers are thousandths of an inch. That's 0.003" difference. That's probably within the margin of error of their caliper.

 

You could have one rotor a half inch thicker than the other and probably wouldn't notice.

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Not going to matter at all. Not going to pull to one side either. That only happens if a caliper is stuck.

 

It's a hydraulic system, so that 0.003" difference just means the caliper pistons travel that much further.

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What people have already said is exactly correct. It is a hydrolic system so you wont notice the difference. I would make sure that the caliper is clean and in full working order than worrying about the rotors. If they are low though I would replace rather than turning them.

 

-Jake

 

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