carosio Posted April 26, 2010 Share Posted April 26, 2010 I agree with Bigthumb, but if its a very slow leak then covering the face of the wheel with a mixture of water and wash-up liquid then watch for any tiny bubbles emerging from the tyre/rim joint, although the paddling pool is the best method. Link to comment Share on other sites More sharing options...
andyrad29 Posted April 26, 2010 Share Posted April 26, 2010 I have known alloys just do this as it leaks through the metal and there is nothing you can do about it. just get a new wheel Link to comment Share on other sites More sharing options...
carosio Posted April 26, 2010 Share Posted April 26, 2010 I have known alloys just do this as it leaks through the metal and there is nothing you can do about it. just get a new wheel Castings can be porous, but this should be revealed on the above tests. If this is the case then the leak could be pinpointed (assuming it's just one spot) and it might be feasable to treat the appropriate area on the inside of the rim. Link to comment Share on other sites More sharing options...
SHYTOT Posted April 26, 2010 Share Posted April 26, 2010 Castings can be porous, but this should be revealed on the above tests. If this is the case then the leak could be pinpointed (assuming it's just one spot) and it might be feasable to treat the appropriate area on the inside of the rim. There is a company in Stalybridge who vacuum treat porous castings with thin resin. They then cook the casting to cure the resin and cure the porosity. It takes a couple of hours. Link to comment Share on other sites More sharing options...
carosio Posted April 26, 2010 Share Posted April 26, 2010 I had a car with one of those earlier type diesel fuel filters where the filter was sandwiched between a top and bottom cap but it leaked continually despite renewing the seals. Eventually, after much head scratching, the bottom casting was found to be porous (in one spot), a small amount of Araldite on the inside cured it. Link to comment Share on other sites More sharing options...
Gessa Posted April 26, 2010 Share Posted April 26, 2010 My tyres only go down at the bottom. Link to comment Share on other sites More sharing options...
chriswj Posted March 5, 2012 Share Posted March 5, 2012 I have a Focus with 17 inch alloys and all FOUR keep going down, the rear ones are the worst. This car is the one which I paid most for and its the MOST IRRITATING car Ive ever had. Link to comment Share on other sites More sharing options...
jon smith Posted March 5, 2012 Share Posted March 5, 2012 I have a Focus with 17 inch alloys and all FOUR keep going down, the rear ones are the worst. This car is the one which I paid most for and its the MOST IRRITATING car Ive ever had. i also have a ford focus with 17 inch alloys and my tyres hold air. i feel like the odd one out. it sounds like chriswj's and the op have buckled wheels. Link to comment Share on other sites More sharing options...
dazzle66 Posted March 5, 2012 Share Posted March 5, 2012 i had an old mk 5 escort i used for work with alloy wheels on.The alloys had started to pitter and so i had to pump the tyres up every 3 days as i didnt want to fork out for new wheels on this 98 plate escort.Talking to a guy one day who specialised in placing gell in the tyres to stop you getting punctures.Thought id try it out for sake of £10 per wheel.Had the escort for a futher year never pumped the tyres up again or had a puncture after that as the gell sealed the leaking alloys.Had it done on my BM no problems with leaking alloys.Worked for me. Link to comment Share on other sites More sharing options...
Murphy Jnr Posted March 5, 2012 Share Posted March 5, 2012 My tyres only go down at the bottom. Mine have done that, I just move the flat bit to the top. Link to comment Share on other sites More sharing options...
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