Mine had welded themselves onto the valve and I stupidly thought that a little "persuasion" with a pair of pliers would help. Unfortunately I used a little too much persuasion and wrenched the valve off the wheel. My Bongo also came with 17" split rim wheels which have right angle valves on them these, according to the mobile tyre man I had to call out, are a bugger to get hold of. The result of which is that my van is now on its spare while my tyre man tries to track down a valve. Most annoying

In hindsight I should have hosed the valve down with WD40 or better still chucked the valve caps away when I got the van and gone with boring plastic ones! Lesson definitely learn't!