Alfa 155 rear calpiers???? sliding or twist

[Andy_sx]

As per title, going to replace the rear discs and pads tonight after doing the fronts last night. was just wondering if the rear calipers (1.8 tspark if it matters)was a sliding caliper or one of the twisting ones

Thanks

[wrinx]

Guess this is too late....but the piston turns clockwise on the rears. Halfords sell a windback tool if you struggle(d).