We have recently received back a couple of pairs of wheels. One pair were involved in a road accident (the rider was OK thank goodness) and needed a rebuild. The wheels were less than a year old and looked really in bad shape as their use on winter salt covered roads had taken a toll on the alloy. We wrote both off both rims and spokes and the front hub due to corrosion.
The second wheel had failed due to corrosion as well – you can see from the photo. Here the salty water has sat under the rim tape and eaten away the metal around the valve hole again causing failure in under a year.
The simple reminder is don’t forget to wash your wheels regularly with nothing but hot water to keep the salt off the rims and spokes. Once every now and again, especially during the winter and spring you can remove the rim tape and pour hot water into the rims to clean the insides too as this is where a lot of the water will lay, evaporate and leave the salt to do it’s work on eating your rims.