Inquiry Regarding Wear on Brake Discs/Rotors

R

roninco

New member
Sep 5, 2024
6
0
1
Greetings everyone,

I spoke with the owner of a 2013 S-Tronic V8 on the quality and wear of the discs. The discs are in good shape, including about a 2mm lip.

Based on my study, front discs are 34mm thick when new, with a minimum thickness of 32.4mm, while rear discs are 32mm thick when new, with a minimum thickness of 30.4mm.

The presence of 2mm lips on all items indicates a 4mm reduction in thickness, necessitating replacement.
 
If I interpreted it well, it involves using a micrometer or vernier caliper to measure the outside edge of the rotor's lip in comparison to the actual contact surface of the brake pad.

If there is just a 2mm difference, then that equates to 1mm on either side.
It is advisable to verify that measurement with him, since we are all aware that brake components for our vehicles are costly.
 
Thank you. I will confirm with the vendor; but, if they are measuring a 1mm wear on each side (totaling 2mm), would that not indicate they need replacement regardless?
 
They are intended to be replaced with each pad replacement, however this is not necessary. The front rotors of my 2014 V8 endured around 80,000 miles. The rear components endured for 103,000 kilometers. In my view, replacing rotors alongside pads is a fraudulent practice. This is only my perspective, and many dissent.

The aftermarket rotors I purchased were expected to be of high quality, however they were not. Proceed with OEM or upgrades if necessary.
 
Which aftermarket rotors were subpar? Send a direct message if you prefer not to post publicly.
 
Is it really my perception, or is the mileage for rotors seem extraordinary? I have owned several vehicles over the years and have never had rotors with such longevity.
Driving style is associated with lifespan.
 
I acquired Zimmerman front rotors, which seemed to exhibit significantly accelerated wear compared to the OEM counterparts. Occasionally, inexpensive items prove to be the costly ones.
 
I believe that the practice of replacing rotors alongside pads is a strategy used by brake manufacturers to enhance their profits. At 80,000 miles, the original rotors had a discernible lip; nonetheless, I was not aware of any significant influence on performance. It began to constrict in the conclusion, which is why I replaced them.

However, 90% of my mileage consisted of highway travel.
 
You must log in or register to reply here.
Top Bottom