God damn rivets.

[Waspy]

The rivets holding my trim on keep working loose. I re-rivet them quiet often (with tight fitting rivet) but they don't stay tight. I lost a rear wheel arch trim today. RIP

[Gti_Jamo]

Kind of rivets you using? Ideally you want small stainless steel ones that fit perfectly in their holes before stretching them.

[Waspy]

Kind of rivets you using? Ideally you want small stainless steel ones that fit perfectly in their holes before stretching them.

Bog standard (probably ali) rivets which fit snug before riveting. I think the problem is due to rust around the holes. The arches are generally in okay nick, not too much rust. But I would imagine the use of aluminium rivets it has sped up corrosion :\ solutions? I don't really want to glue them on tbh.

[Sgt_Lemon]

How about an anchor nut and screw. A washer can be used also to spread the load allowing tighter fitament due tops reading the load

[gazareth]

m6 coach bolts are the answer(the ones with the slotted head for a screwdriver) with m6x10mm washers and nuts. once fitted just dab a little black paint on to bolt head and you will barely notice them there.

[VW BUSH]

Silicone helps hold them on if the rivets are not great.
Not no nails.

[Sgt_Lemon]

The other tried and tested way of sticking arches is tiger seal. Coat the arch and stick it down with clamps and cardboard. Let it set over night and then never remove the arch ever again

[Santiago]

Since buying my 8v about 18 months ago about 6 pieces of plastic trim have fallen off the outside of it (all retrieved).
Both halves of the front splitter first, 'cos it was well lowered and I have to go over a little bump onto where I park. Then the left front arch trim, then the right, then one of the door trims. Most recently the n/s/r arch trim fell off, which was a really pleasant surprise 'cos the arch underneath was absolutely immaculate! 

The only one I've refitted so far is the door trim.  Thanks to the suggestions in this thread I may get round to putting some of the others back this summer. 

I bought some 'genuine' black rivets a while back, but I bet I can't find them if/when I get round to sorting any of this out...

[VW BUSH]

The other tried and tested way of sticking arches is tiger seal. Coat the arch and stick it down with clamps and cardboard. Let it set over night and then never remove the arch ever again

Tiger seal is an absolute fckr to get off if sods law is applied.
It will stick arches to rust though. ......

You can stick some shrink wrap on the rivets to help them hold

[gazareth]

go to your nearest wicks and get a bag of m6/25mm roofing bolts(nuts included). personally I would never trust any kind of silicone/glue stuff to hold an arch liner on. if it was to come of on the motorway with a motorcyclist behind you or a car then it could get pretty nasty.