Slow puncture, 18'' spyders

[ceejay]

I appear to have a slow puncture, OK nothing special in that except that i can't see any sign of puncture damage to the tyre. Could be a duff valve but thoughts now turning to the new 18'' spyders...........anyone know of any problems with these with respect to cracking or porosity in the castings?

[dannylt]

Certainly possible, but only way you're going to find out is if you puncture test each tyre? Or try swapping the rubber & rims on the different sides - that would narrow it down.

danny

[Byff]

Why look for the most obscure reason? Could it not be possible that you have indeed got a slow puncture and you need to get it fixed.