I've always been a wonder wheels man...but I'm not going to use it on my current alloys

so

Any suggestions for painted diamond cut alloys?

(I want to fully clean them before I apply the C5, which I;m STILL waiting for after 2 weeks!) RRS gone
Audi SQ5...Gone Audi Q7 S-Line 240 3.0TDI Gone
Audi A6 Allroad Sport 270 3.0TDI

Iron X is good ... if you can stomach the smell.

Bilberry

I would either go with:
Wolfs Decon Gel - A fantastic all rounder - use on bodywork too.
P21s Power Gel - (Pricey but absolutely superb)
Sonex Extreme Wheel Cleaner - (see P21s)

If you use one of the above and then C5, you should be able to maintain them with just car shampoo and water

For what its worth, before C5 I would:
Use one of the above - probably Wolfs as that is what I have in the garage.
Follow up with some 'Tardis' or other tar remover
Give a quick clay over the surface with an old piece of clay t ensure it was super smooth
Wipe down with IPA (IsoPropyl Alcohol) for a completely clean surface for the C5 to bond too

PS: You do know that C5 is EXACTLY the same as C1 and C4 don't you (see recent revelation thread over on detailing World). Maybe see if you can find that in stock elsewhere  ON THE WAY: BMW F21 M140i
MERCEDES GL350 - Metallic Navy Blue w/Grey interior

GOING: BMW F31 335D MSport+ xDrive Touring
GONE: Land Rover Discovery 4 HSE - Stornaway Grey w/Black Interior (wish we'd kept it )
GONE: BMW F10 520D MSport - Carbon Black
GONE:MY12 RRS SDV6 HSE Sumatra/Ivory/Grand Black Privacy glass

Cheers all (and essay from bean which was expected ) RRS gone
Audi SQ5...Gone Audi Q7 S-Line 240 3.0TDI Gone
Audi A6 Allroad Sport 270 3.0TDI

I've just had an email from Ultimate finish

Global supplies of C1,C4 & C5 have all been slow do to some problem with chemical availability to Gtechniq which they've now resolved so delivery is next week sometime

 RRS gone
Audi SQ5...Gone Audi Q7 S-Line 240 3.0TDI Gone
Audi A6 Allroad Sport 270 3.0TDI

Glad I didn't disappoint  ON THE WAY: BMW F21 M140i
MERCEDES GL350 - Metallic Navy Blue w/Grey interior

GOING: BMW F31 335D MSport+ xDrive Touring
GONE: Land Rover Discovery 4 HSE - Stornaway Grey w/Black Interior (wish we'd kept it )
GONE: BMW F10 520D MSport - Carbon Black
GONE:MY12 RRS SDV6 HSE Sumatra/Ivory/Grand Black Privacy glass

Just to add a little

I would either go with:

Wolfs Decon Gel - A fantastic all rounder - use on bodywork too and can be left to dry unlike Iron X
P21s Power Gel - (Pricey but absolutely superb) I didn't think this was that great
Sonex Extreme Wheel Cleaner - (see P21s) Heard very good reports of this


Not heard that C5 was same as C1, but C5 on gloss black wheels on the wifes is great

Here you go Nick

Also a good read on supply here ON THE WAY: BMW F21 M140i
MERCEDES GL350 - Metallic Navy Blue w/Grey interior

GOING: BMW F31 335D MSport+ xDrive Touring
GONE: Land Rover Discovery 4 HSE - Stornaway Grey w/Black Interior (wish we'd kept it )
GONE: BMW F10 520D MSport - Carbon Black
GONE:MY12 RRS SDV6 HSE Sumatra/Ivory/Grand Black Privacy glass

whats the shelf life of C5? I used my bottle in September, now thinking of using whats left on some trim

I guess if it's still a liquid, its fine, if it's started to crystallise, then I guess it's expired ....sorry not much help  ON THE WAY: BMW F21 M140i
MERCEDES GL350 - Metallic Navy Blue w/Grey interior

GOING: BMW F31 335D MSport+ xDrive Touring
GONE: Land Rover Discovery 4 HSE - Stornaway Grey w/Black Interior (wish we'd kept it )
GONE: BMW F10 520D MSport - Carbon Black
GONE:MY12 RRS SDV6 HSE Sumatra/Ivory/Grand Black Privacy glass

i'll have a look for crystalls and also look up C4 applications methods too if it hasn't

Would a bottle of C5 treat the whole car?

and do i need to clense the wax off the car before treatment RRS gone
Audi SQ5...Gone Audi Q7 S-Line 240 3.0TDI Gone
Audi A6 Allroad Sport 270 3.0TDI

An RRS, I doubt it, you'd probably need between 30 and 50ml for the whole car, excluding the wheels awd.

Worth looking out for the new C1+, which is easier to use/apply. I also recently got C1.5 Silo Seal and that is a superb product , so much so, I will soon be selling off a few other products I have as I will no longer use them.

Yes, you'd need make sure that you have a clean surface for the C5/4/1 to adhere to. The least would be an IPA wipe down with the ideal being a quick spruce up with P1 or P2  ON THE WAY: BMW F21 M140i
MERCEDES GL350 - Metallic Navy Blue w/Grey interior

GOING: BMW F31 335D MSport+ xDrive Touring
GONE: Land Rover Discovery 4 HSE - Stornaway Grey w/Black Interior (wish we'd kept it )
GONE: BMW F10 520D MSport - Carbon Black
GONE:MY12 RRS SDV6 HSE Sumatra/Ivory/Grand Black Privacy glass

need to adhere to paint work not a layer of wax, they're products which have been developed for stripping wax, I saw a thread on DW on it not so long ago about one that was a spray on wipe off.

I'm waiting on the C1+ to see how it looks, as well as the Wolf Chemicals new one which offers the same scratch resistance. Till i machine polish the car, i'm sticking with wolfs body wrap thats on