The 1.9 tdi has 50mm hubs and 282mm discs , the 2.0 tdi should have 55mm hubs and 288mm discs as standard ...not sure if the 170tdi has 312mm discs but it might have as b6 passat 2.0 140 has 312mm as standard ..think you will need different caliper carriers to fit 312mm discs ...why not fit r32 334mm discs and calipers ??
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