East Kent AR Posted May 22, 2022 Share Posted May 22, 2022 My wife's Fiesta has three porous alloy wheels, the fourth is ok. On one rear wheel, over two weeks, the pressure drops from 26psi to around 16. The two fronts tend to go from 31 to 25 in the same period. Now I have never taken a wheel off and immersed it and this is just an assumption. However, to have three leaking tyres is unlikely and they are not that new but good tread.Does any one have a solution. All rims have the remote air pressure monitors, so the alarm always come up before driving.Piers Link to comment Share on other sites More sharing options...
BenF Posted May 22, 2022 Share Posted May 22, 2022 Hi Piers, how old is the car? I had exactly this problem years ago, with alloys which were 15 years old.Refurbishing the wheels is probably the cheapest solution, maybe someone here can give some recommendations. Link to comment Share on other sites More sharing options...
Roadsport06 Posted May 22, 2022 Share Posted May 22, 2022 We have the same issue on an ancient car, leaked air in all 4. Refurbishment is not really an option as the car is worth about 23 pence. I ordered Tyre Goop and put in all four and no more leaks. I assume the tyre pressure has forced the Goop into all areas to seal the wheel. Link to comment Share on other sites More sharing options...
aerobod - near CYYC Posted May 22, 2022 Share Posted May 22, 2022 Often with wheels older than 5 years or so the paint or lacquer on the bead will be damaged from stone chips on the edge of the rim or tyre changes, and alloy corrosion takes place, causing slight air leakage. You can't really tell if that is the case without taking the tyre off to inspect. Link to comment Share on other sites More sharing options...
Wrightpayne Posted May 22, 2022 Share Posted May 22, 2022 The indy tyre place I use has an angle grinder with a wire brush - there is always a pile of silver dust on the floor when I go in! Lifting powdercoat is quite common! Link to comment Share on other sites More sharing options...
East Kent AR Posted May 22, 2022 Author Share Posted May 22, 2022 Ben The Fiesta is 2014 vintage. One Ltr Ecoboost.Piers Link to comment Share on other sites More sharing options...
SM25T Posted May 22, 2022 Share Posted May 22, 2022 If it is bubbling corrosion where the tyre bead sits inside the rim, you can remove the tyre and wire brush/sand the inside face of the rim and repaint this non-visible area with something like smoothrite. Let it cure then refit the tyres. Worked fine for me. Link to comment Share on other sites More sharing options...
ScottR400D Posted May 22, 2022 Share Posted May 22, 2022 Porous rims very unlikely. Are the valves OK? Have you tried putting a strong washing up liquid solution around the bead and valve area? That should show up bead or valve leaks. Link to comment Share on other sites More sharing options...
BenF Posted May 25, 2022 Share Posted May 25, 2022 Piers, did you get any further in resolving this? Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted May 25, 2022 Member Share Posted May 25, 2022 "Often with wheels older than 5 years or so the paint or lacquer on the bead will be damaged from stone chips on the edge of the rim or tyre changes, and alloy corrosion takes place, causing slight air leakage."Three alloy wheels on my wife's car developed slow leaks. All were fixed by the local wheel specialist. Current price £70/ wheel including removal, balancing and refitting.(And I got to see some amazing finishes on other people's wheels.)Jonathan Link to comment Share on other sites More sharing options...
Area Representative paul richards Posted May 26, 2022 Area Representative Share Posted May 26, 2022 Inner tubes. Link to comment Share on other sites More sharing options...
ScottR400D Posted May 26, 2022 Share Posted May 26, 2022 "Inner tubes"..............are the last thing you want to consider and then you need to decide against. Any penetration will lead to instant deflation, a massive retrograde step. The industry stopped using them for good reason. If there's an issue fix it properly don't change one problem for another, bigger, one. Link to comment Share on other sites More sharing options...
BenF Posted May 28, 2022 Share Posted May 28, 2022 My solution is to have steel wheels on a daily driver - not fashionable but are less prone to kerbing and damage. Link to comment Share on other sites More sharing options...
Wrightpayne Posted May 29, 2022 Share Posted May 29, 2022 Ben,I'm with you on that one!!Ian Link to comment Share on other sites More sharing options...
East Kent AR Posted May 29, 2022 Author Share Posted May 29, 2022 Sorry for not replying as I have been away on holiday and back yesterday. So no progress made yet.Piers Link to comment Share on other sites More sharing options...
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