I have 90,000 miles on my front pads/rotors, just wondering when should I change the rotors because my pads are squeeking?

 

When the machine shop at O'Reilly Auto Parts says "they are below tolerance to for us to turn them".

 

Technically, so long as the rotors are smooth and thick enough, they should be good. On a personal level, I'm at 110K and just replaced my rear rotors and pads. From what I have seen this is the average time most people replace their brakes, good or not. Hope this helps.

 

When you replace your pads remove your rotors. Take them to a parts store with a machine shop (most have this). They will measure them check for parallelism, thickness and either turn them, or they will be nonturnable and sell you new ones. Always get rotors turned or replaced on a brake job. If it is not done rotor warping, poor pad contact area, screeching, and poor brake performance can occur. Make sure you use brake grease on back of pads, pad slide areas, and caliper pins as well. Good luck any questions let me know.

 

Whenever they warp from oversized wheels & tires.

This is how bad my front left rotor was grooved.

 

Every time I've had a set of rotors turned, they warp within 2 weeks.

 

why did you get slotted rotors?

 

As others have said, it all depends on the condition of the rotors. But, you only need to replace rotors when you replace pads, so don't worry too much until your pads get down to minimum thickness. Technically, when you replace pads, you need to replace or machine the rotors so you have two new surfaces to bed in. I have seen some cases where the rotors were good enough to re-use without machining though. And I do agree that generally speaking, turning rotors leads to warped rotors in pretty short order.

On a more personal note, I'd say you're doing darn good to have original rotors on after 90,000 miles. On my 2005, I had to replace all four rotors by 25,000 miles - and I'm famous for how much life I get out of my brakes. I've never experienced such awful OEM rotors on any vehicle. I replaced them with Brembo stock replacement rotors and they were on the truck when I sent it down the road with 84,000 miles on it.

 

thanks for all the info, i think i'll just bite the bullet and get all new parts

 

Why not? they keep debris away from your pads even though they tend to wear down the pads fairly quickly..

 

you also have less biting area. with a 5,000 pound vehicle, less braking performance isnt a highlight

 

You would be hard pressed to notice any negatives from slotted rotors in the real world.

 

Other than the fact that they absolutely eat pads, I guess you're right.

 

My brake performance greatly increased with the slotted rotors. They are a ton safer than drilled & slotted, and wont warp. I am happy with the purchase. Haven't inspected the pads in awhile but will do so next oil change & wheel rotation

 

I changed my pads at 30K miles to Wagner TQs and at 92K I am still running them along with the stock rotors, which were never turned.