Rule of thumb: If brake pad thickness is less that backing plate, you will need brake pads soon. Based on picture provided, I see a healthy brake pad. However, if brake rotors were machined, than new brake pads will benefit overall performance. Why, is a little more esoteric...

 

I understand 😀

 

Why would you want to be machining the rotors? Is that how all the pads look? That is a lot of pad left if so.

 

I got inspection at pedders suspension and they told need to machine rotor.

 

Don't Euro cars normally just replace rotors as they're a pain to machine? That's what a few mechanics I've worked with have said

 

Rotors aren't typically machined for 2 reasons

• there's almost no "meat" on modern OEM rotors, so by the time the pads wear, there's nothing left of the rotors to machine and still meet specs. (plus, if your rotors get grooved and hacked up, it's usually because of abnormal wear, or postponing your pad replacement too long)
• there's too much cost involved with properly turning down used rotors vs what they cost to replace (shop rates are high, brake lathes are expensive, etc)

 

Visually looks like a lot of brake pad left on that and seems ok.
Does the car brake ok?
Does it have warped discs? (eg you feel vibrations?
Doesn't look like there's too many groves in the rotor either.

 

Visually looks like a lot of brake pad left on that and seems ok.
Does the car brake ok?
Does it have warped discs? (eg you feel vibrations?
Doesn't look like there's too many groves in the rotor either.

No vibration. Yes brake is very fine but they asked me replace

 

The car has brake pad wear sensors. It will tell you when it is time to replace the pads. Even then you'll have thousands of kilometers before it becomes critical.

 

VW does not allow the machining of brake rotors on these cars, if they machined your rotors they destroyed them, and they owe you a refund of the work, plus a brand new set of rotors for free. I'd ask them to pay someone else to do this work, as you can't trust them.

You need to get a digital caliper and measure the thickness of the rotors, and see if they are now below the allowed thickness spec, and if so replace the rotors ASAP.

It's extremely dangerous to machine the brake rotors, because if they're below the wear limit, the pistons can pop out of the brake caliper, and cause the wheel to lock up suddenly and/or catastrophic loss of braking ability.

However, for future reference, it is not safe to assume that brake pads wear evenly on any vehicle. A photo of just one pad doesn't tell you anything, you need to look at all of the pads, inner and outer.

 

VW does not allow the machining of brake rotors on these cars, if they machined your rotors they destroyed them, and they owe you a refund of the work, plus a brand new set of rotors for free. I'd ask them to pay someone else to do this work, as you can't trust them.

You need to get a digital caliper and measure the thickness of the rotors, and see if they are now below the allowed thickness spec, and if so replace the rotors ASAP.

It's extremely dangerous to machine the brake rotors, because if they're below the wear limit, the pistons can pop out of the brake caliper, and cause the wheel to lock up suddenly and/or catastrophic loss of braking ability.

However, for future reference, it is not safe to assume that brake pads wear evenly on any vehicle. A photo of just one pad doesn't tell you anything, you need to look at all of the pads, inner and outer.

QFT. It's 99% of the time the INNER pad that locks up and wears to high hell on most vehicles, which you're not seeing w/out pulling the wheel off in many cases.

 

My brake wear indicator came on this morning. That's after 107,000km on original pads.

 

How did you last 107000km on original pads damn

 

Your brake pads could be cracked or burned from excessive heat. I would replace them.

 

Distance covered doesn't translate to anything.
I can go on an oval track and drive 200k or more and still have full brakepad thickness left.... in any vehicle.
Or I can tow heavy and drive like a hooligan and kill the same pads in 20k or less.

Driving style and specific use scenario matter.

 

Yea I'm definitely the latter (without towing)😂

Before these set of brakes from 2023 when me and my dad had mixed use of the car, we did front brakes in 2021 and they barely lasted 40,000km

So far the current brakes still have 7mm left on them pretty meaty

 

Our 2016 V8 TDI R-line has just covered 110,00 kilometers and that includes 40,000 kilometers of towing at max GCM.

Original rear pads are just down to wear indicators fronts not far behind. Discs are just above min thickness.

Keeping in mind that there is only 2mm difference between new disc thickness and minimum allowable thickness (1mm per side) that means machining
is a marginal/non proposition.

I'm in the process or replacing all 4 rotors and pads with DBA products.

 

You come across as being impressed with your OEM brake performance over 9 years and 110Kms, the question that begs to be asked is why would you want to change your brakes to a brake product that you really have no personal history with/of?

TonyB

 

This true for all Treg years? Thanks