Hi,
Am trying to change the disks and pads on my wife's 2016 Fiat 500 1.2 petrol. The whole assembly on these later 500s seems more like the Abarths if you look at the YouTube videos.

Anyway all is going fine until it comes to remove the bracket holding the calipers (the calipers come off with a T45). There seems to be a weird 'star' shaped nut instead of a standard 6 sided nut. Essentially it looks like the end of a Torx screw. A 13 min socket fits over it perfectly and seems to grab it tight but it is slipping. Is there a different type of socket that I need to remove this? I haven't seen anything like this before...

Thanks in advance

Ah I think I have found it - is something called a Torx spanner....never heard of that before...

Very common now, they are female torx sockets or star sockets in halfords, Usually have a E number for the sizes. Worth getting a set if doing any car nowadays.

As others have said etrox common on brake and suspension parts these days

Thanks guys - got myself a set at the local motor store and worked fine. Cheers

This is not on new 500's, my wife's 61 plate Twin air has the same bolts for the brake calipers. It's an E16 socket for the caliper bracket. The caliper guide pins are actually a hex head and work with a H7. Risky business using a Torx on hex bolts.

GeoBog said:

The caliper guide pins are actually a hex head and work with a H7. Risky business using a Torx on hex bolts.

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:yeahthat:

The guide pins will be tight if never previously removed; you need a good quality H7 socket, rather than an allen key.

A good quality allen key and a big happer usually does the job of an impact type drive.

vexorg said:

A good quality allen key and a big happer usually does the job of an impact type drive.

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You'd be better off with an allen socket and a breaker bar. Using a hammer could damage the wheel bearings.

What’s a “happer”?? Dumb autocorrect

Anyway, never had an issue with Allen key and hammer. Can’t see how the wheel bearing would be bothered.

vexorg said:

What’s a “happer”?? Dumb autocorrect

Anyway, never had an issue with Allen key and hammer. Can’t see how the wheel bearing would be bothered.

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The shock could potentially damage the ball bearing is the wheel bearing but I'd think that's quite unlikely has they are made from or at least should be made from high quality steel and are packedy in grease to reduce shocks
Definitely wouldn't think it's anyworse then hitting. A pothole at speed

Given the amount of beatings I’ve given discs, drums and ball joints with a large lump hammer, I don’t think the bearing are of any concern. Never had one fail after working on a car at any time.