Grinding noise and grooves in front brake discs

When did you last have a brake maintenance? The US interval for thorough brake inspection is 3 year or 30K miles.

 

the front brakes do more work i believe. not sure why so much grooving, how much left on the pads?

 

IMHO.....something not "Normal" going on.......especially at 60k......got a 100k on mine & they look like they're good for another 100k......FWIW

 

some have shown early wear due to corrosion and lack of attention to inspection and lubrication, as mendel mentions above.

 

Yeah I'm speculating caliper pin lube has dried up, not allowing the caliper to float; that the brakes have never been opened up.

If it's messed up enough a preemptive set of fresh pads, clean-and-lube of all contact points and the pins, and removal-and-burnish of the rotor might solve. If wear is uneven, they'le likely be noisy for the next week, till they settle down.

 

My bad......I was ASSUMING proper maintenance.......I do know better.....

 

Maintenance, inspection, don't get muddled with the language.

Every 5000 miles or 6 months they're to be "visually inspected", and every 3 years or 30K miles is the in-depth inspection (aka "maintenance"). Whatever it's called, the calipers are supposed to be pulled, calilper pins lubed, pads/shims cleaned and inspected, contact points cleaned and lubed, disc thickness/runout checked to be within specs.

Check your Warranty and Maintenance Manual.

 

First instance page 41.

It's your car. If the dealership has convinced you it has miracle brakes, what can I say.

 

the whole car is almost a miracle.

 

Have you ever had the calipers off? All the chest beating aside, I'm thinking it's the caliper pins drying up. With 60K on the odometer you should have had the in-depth service (aka inspection, aka maintenance) twice now: every 3 years or 30K miles.

One thing, Toyota documentation is poor, shows the soup-to-nuts breakdown of the brakes, doesn't differentiate well: visual inspection, vs complete maintenance, vs complete caliper overhaul. Honda is better in this regard: their Shop Manual have specific section, say brake service, and walk you step-by-step through what's required.

Still, this stuff is pretty much biblical, never changes.

 

Zero Fahrenheit? Ouch! It's been stubbornly below freezing here in lower mainland BC, not like that though.

I'm gonna do our front brakes come spring, when taking the snows off.

If you DIY it's safest to disconnect 12 volt negative cable and isolate it, before opening anything up. Before reconnecting when everything is reassembled , push brake pedal multiple times. This avoids possility of car detecting excessive pedal travel, throwing a code.