11 25 Pistons with Rings and Pins (M57T2 M57 Top2 D30)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

PISTON RING GROOVE CLEARANCE SPECIFICATION

1st groove
End clearance	mm	0.17... 0.30
Axial play	mm	0.12... 0.16
2nd groove
End clearance	mm	0.30... 0.45
Axial play	mm	0.07... 0.11
3rd groove
End clearance	mm	0.20... 0.40
Axial play	mm	0.03... 0.07

PISTONS AND PINS SPECIFICATION

Piston and pin are paired to each other - replace together only.
Measuring point "A" (position)	mm	10
Piston diameter at measuring point "A"
Original (new dimension)	mm	83.955^±0.009
Repair stage (new dimension)	mm	84.035^±0.009
Oversize (new dimension)	mm	84.205^±0.009
Piston installation clearance (piston new)	mm	0.036... 0.072
Permissible total wear tolerance between piston and cylinder (engine operated)	mm	0.15