robjet
Registered user
Ok so I got my can of ACF- 50 today , just been out and sprayed the bike , my question is I got abit over excited with spray and some has ended up on my back tyre should I be worried 


There is no problem in applying a very film to the rims themselves (would recommend applying a thin film with a rag). but i would avoid applying or leaving this product on the tyres..
You would wipe the tyre of any oil say that got spilled from the FD when draining it, so as this is no doubt a petroleum based product the view of the tyre manufacture would be to remove it
In addition there could be a risk of the rear tyre "slipage"
unless its just on the side wall yes you should be unless you clean it off.



ACF50 is a dirt magnet,BUT when you hose it off bike is all lovely underneath,well if it was before you sprayed it on![]()

Sounds a bit like 'Gunk' - does that still exist? The smell was not too good.
Sounds a bit like 'Gunk' - does that still exist? The smell was not too good.

Gunk was a degreaser and not a corrosion inhibitor. It was very good for getting oil and cr*p off old British bikes. Smelled like Jeyes fluid though.

Reminds me of those happy days when you hammered gaskets out of brown paper, ground in valves with paste and could undo ( or more often tighten up) almost everything on a bike with a couple of spanners. In fact there was one bike that only needed one spanner - it was called a Woller I think and this spanner was mounted on the headlight; Sorry, I have gone off thread - must be the gunk vapour!
. its just taken me almost 2hours to clean it ! 


your not supposed to clean it off untill spring you numpty![]()