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BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

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      02-20-2016, 07:34 AM   #1
dojk
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Min thickness of front & rear rotors for E82 135i?

Hi,

Would like to know what is the min thickness (mm) for the front and rear rotors for the E82 135i.

I don't' have the facilities remove the wheels to check the printing on the hats.

Thanks.
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      03-18-2016, 09:19 PM   #2
jvb6806
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2010 BMW 128i  [5.00]
Front disc min thickness: 24.4 mm

Rear disc min thickness: 324mm dia - 20.4mm or 300mm dia - 18.4
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      03-18-2016, 09:30 PM   #3
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The min thickness for the rotors is stamped right on the hub section of the rotors. FYI
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      03-28-2016, 09:01 PM   #4
dojk
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Quote:
Originally Posted by Dackelone View Post
The min thickness for the rotors is stamped right on the hub section of the rotors. FYI
I know, just couldn't be bothered to remove the wheel to see it.

Also because then I'll have to make a 30min drive to the workshop to retorque back the wheel lugs.

Totally laziness on my part.
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      03-28-2016, 09:02 PM   #5
dojk
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Quote:
Originally Posted by jvb6806 View Post
Front disc min thickness: 24.4 mm

Rear disc min thickness: 324mm dia - 20.4mm or 300mm dia - 18.4
Bollocks, my fronts are on 23.3mm. BMW's service center's goons had a look the other day, commented it's still good for another 6mths.
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      03-28-2016, 09:08 PM   #6
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Quote:
Originally Posted by dojk View Post
Bollocks, my fronts are on 23.3mm. BMW's service center's goons had a look the other day, commented it's still good for another 6mths.
I'm sure they are safe to drive one for another 6 months if you wanted to. But they may warp if you are getting a ton of heat into them. If I were talking to you as a service professional I would say to replace them, if it were my car (DD not a race car) and I wanted to wait a bit I would probably roll the dice.
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      01-23-2018, 07:08 PM   #7
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Thanks for this!
Probably doing rear pads this weekend (2mm left, according to a shop.)
Need to check on replacing rotors.
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      01-26-2018, 05:31 PM   #8
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Just did rear pads.
Rear rotors are at 22.5mm, so I'm just gonna bed em in and call it good.
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