Replace calipers in pairs?

[sovietspybob]

Would you replace them in pairs or just 1 at a time when an issue arises ?

I've got a seized rear caliper on the Swift, ordered a replacement but ended up getting the other side first due to a listing error so i've actually got both sides now. It'd be worth about £100 refund if i send it back so i'm thinking of doing that and just replacing the borked one.

Generally i do like to replace things in pairs, brake pads and discs obviously and suspension stuff.

(this is pending changing the faulty one and then not snapping the bleed nipples off the other ones and needing to replace them anyway...)

 

[sovietspybob]

The other caliper is fine and free moving, it's a 2012 car with 62k on the clock so wasn't expecting it really.

The disc only had a very small contact patch which is why i changed them as i suspected there was an issue, i was hoping it was just the carriers had got gunked up with rust but turned out to be a stuck piston.

It's the sport version but i agree the brakes don't need to do much work on the car even when driven hard, i don't think i'd want drums on the back when doing track days though.

 

[sovietspybob]

Not an expert but are you sure that the guide pins just don't need a clean and grease?

No it's the piston itself is seized, it wouldn't wind back. In fact i bent 3 separate tools trying to wind it back in