286 or 282mm brake discs

[JR128]

Hello,

Ordering front and rear brakes/dics soon, and saw on GSF Delphi brakes/discs. For the rear I see there is an option of 282 or 286mm based on my car reg. If I review ECP offerings they all appear to be 286mm (Bosch, Paggid etc).

I prefer to go with GSF Delphi but they have 282mm rear discs.

Trend appers to be 286mm.

- Will 282mm be ok?
- Delphi brakes better than say Bosch?

Many thanks.

[GreenV8S]

Measure what's on the car currently. It may just be a typo in the database you're looking at, but you want to end up with the same size as the existing fitment.

[Scrump]

Measure the disc diameter you have in the car and buy the same diameter.

[Smint]

That sounds like a typo or small error in the database, where there are two choices of disc its usually a larger difference between the options, ie for my Forester the options for rear discs are 266 and 285.7mm.

But as above, measure yours, and note if there's a ridge of unswept friction area of the disc on the outside so if these really were 4mm diameter smaller (which i doubt will be the case when you offer them back to back with the old ones) you would still have pad contact within the outer edge.

[JR128]

Called up VW Spare parts and gave the VIN, rear discs from factory supplied is 282mm.

Is there any reason why ECP sells 286mm parts for the registration??

Will look into measuring.

Thanks.

[JR128]

Cut some MDF up laying around, measured at 282mm. Put next to brake disk (as best possible) and getting a snug 282mm. Still confused why ECP and GSF sell 286mm, only GSF do a Delphi 282mm.

[E-bmw]

There are plenty of cars that come with different sized discs for different spec.

Auto/manual.
Lower/higher power.

etc.

Just ignore the wrong ones & buy the right ones, job done.