Slow leak caused by corrosion within the wheel

One of today's jobs was a Daihatsu Sirion where both front tyres would lose around 10 psi every week. The owner thought she had punctures in both tyres and called us at Hometyre to fix the tyres or replace them depending on what we found.

I arrived at the address and after getting the car keys from the owner checked the pressures in all the tyres, both rear tyres were fine, but both fronts had dropped considerably in pressure. I jacked the car up and removed the first wheel. This was then taken into my van where I checked all around for a puncture, not finding anything I used a leak detector liquid, which showed bubbling from around the edge on the tyre. I then deflated the tyre and removed it from the rim. Checking the rim it was easy to see bubbles in the lacquer inside the rim, this was allowing air to leak out causing the problem.

I wire brushed the area back to bare metal and then applied a bead seal, which is like a liquid rubber. A new rubber valve was put into the rim, the tyre was then replaced back onto the rim and inflated to the correct pressure. The bead seal fills any small imperfections between the tyre and rim drying to form a rubber seal.

The wheels was then balanced and put back on the car. I then went through the same process with the other front wheel, which turned out to be the same problem.

Once complete, I made up a report for the customer, which will be emailed to her. Payment was taken using our onboard card reader.... Job complete.