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tow bar
by G Walker - 24/08/26 06:52 PM
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Jun 14th, 2026
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Joined: Apr 2014
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Just Getting Started
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OP
Just Getting Started
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Having a poke around before the Pixie goes in for the MoT I noticed that inside the rear bumper around the mounting brackets what I had thought was a galvanised surface is now flaking off. So I suppose the coating was some sort of paint (maybe Hammerite?). The rear bumper is now showing quite a bit of bare metal inside and I suppose the front bumper will go the same way. As a new coating needs to be a bit flexible would it be OK just to spray inside the bumper with Dinitrol leaving the chrome on the outer surface untouched?
Plus 4 2-seater / 2.0 Duratec / 2011 / Amazon Green
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Roadster Guru Member of the Inner Circle
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Roadster Guru Member of the Inner Circle
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It depends how bothered you are on how it looks. When I had chromed bumpers. I kept the backs painted, not with Hammerite, but with etch primer and silver metallic.
The best approach is to remove the bumper, and remove all the flaking and loose finish. Then etch prime and apply a top coat of your choice. If necessary you can then spray over with Dinitrol of equivalent. You might also refurbish the bumper irons at the same time and if you refit with new nuts and bolts it will transform the look.
DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4
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Learner Plates Off!
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Learner Plates Off!
Joined: Oct 2012
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I have done the quick and easy Dintrol on top of flaking paint route and it lasted quite well. Dave's suggestion is far better however as it will prevent/delay further deterioration of the inner paint finish.
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We judge the backs of bumpers in Pride of Ownership. It's an easy place to gain or lose points. The factory finish does look a lot like thinned Hammerite, but for the sake of an afternoon's work, they can be transformed very easily.
DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4
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Formerly known as Aldermog Member of the Inner Circle
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Formerly known as Aldermog Member of the Inner Circle
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Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...
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Joined: Dec 2008
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They provide protection in car parks.
DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4
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Gone to Porsche Part of the Furniture
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Gone to Porsche Part of the Furniture
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They provide protection in car parks. Never quite understood the effect of protection from a Chrome Bumper, sure the Bumper takes the impact at low speed saving the body work, but then the Bumper is/was metal anyway and been chrome cost you a fortune to replace as it could not be filled and repainted. dented Bumpers just look awful 
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Joined: May 2010
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Needs to Get Out More!
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Needs to Get Out More!
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My old 4/4 had bumpers and the insides were painted with Hammerite hammered version when I bought her.
They needed touching up so they were removed and Hammerite used.
Plus Four MY23 Furka Rouge
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Member of the Inner Circle
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I used Hammerite when I had bumpers
JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
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Just Getting Started
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OP
Just Getting Started
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Thanks for tips everyone - looks like the bumpers will be the next job after the MoT
Plus 4 2-seater / 2.0 Duratec / 2011 / Amazon Green
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