I'd hazard a guess your bushes in the back may be shot. I had a similar issue in my old starlet. Replaced bushes and it didn't move around so much under brakes.
Since the rotor are a chunk of gray cast iron, I think what is happening is that the pad material that gets deposited on to the surface of the rotor is glazing with the heat - are you finding that the pads are also glazed in these instances?
And what have you done, afterwards? Replaced them?
I'd hazard a guess your bushes in the back may be shot. I had a similar issue in my old starlet. Replaced bushes and it didn't move around so much under brakes.
2008 VW Polo TDi
GIAC | REMSA | PD160 | DECAT | MUFFLERECTOMY | ECS | SUPERPRO | PXL KIWI WIFI | 312mm BRAKES | OZ RACING | KUMHO V70A
To Buy: VNT 17/22 or K3 Turbo | R783 Nozzles | Intercooler | Water meth kit.
If they are, then they'll be replaced on warranty since the car is so new!!
It really did feel like what happens with too much preload on the rear of a motorcycle or when you brake hard enough to get the rear off the ground (and I severely doubt the Polo was doing that).
Just had ,my clutch and ECS 14lb flywheel arrive
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