What are the OEM 97+ rotor thicknesses when new

[Hrant]

Doing some measurements with my new 6" digi caliper measurement from Harbor Freight.

The hats say the minimum for the front is 26 mm and for the rear is 21 mm. What are the actual measurements when they are new from the factory?

TIA

 

[ak]

Front Disc Brakes Ventilated, 11.7 in. diameter, 1.1 in. rotor thickness
Rear Disc Brakes Ventilated, 11.9 in. diameter, 0.83 in. rotor thickness

so 28mm front and 21mm rear

 

[Hrant]

Thanks for the quick response ak, but you sure about the 0.83"? That translates to 21.082 mm which corresponds to the 21 mm minimum thickness on the rears! I am thinking it should be closer to 23 mm perhaps?

My 97+ Cryogenic treated OEM rotors with about less than 5000 miles are measuring just about 28.00 mm on the fronts and 22.78 to 22.80 mm on the rears; they jumped as high to 23.00 mm also. The measurement is quite sensitive to what depth I measure or how close I am to the outside edge - the closer to the edge the more mm.

 

[ak]

You know, that number kind of threw me off as well. After researching a little bit more, I see both 0.83" or 21mm and 0.9"(which equates to 22.8mm) or 23mm listed. The number above was directly from Acura website... I think 91-96 rears were 21mm while 97+ is 23mm. Sorry for the confusion.

 

[Hrant]

And here I thought you were testing my fuzzy math .....

 

[ak]

Well, if Acura knew what the heck they are really putting on their cars, it'd have been easier!