You can't beat buying quality in things like this.

Years ago when i drove artic tippers, on steel springs for added pounding, the standard bulbs we used were Lucas, they lasted ages.

Then one day a rep from one of the companies in the OP came calling, special offers galore, my boss bought trays of their bulbs they were so cheap, thousands.

Just as well he bought boxes of them as we fitted them by the dozen every day, running empty from Widnes across to the Notts coalfields (remember them?) on a wet day with lights on, on average 6 out of the 8 new make side light bulbs fitted to a trailer would blow due to the 2 hours of hard vibration...when we fitted these new quality bulbs they'd often fizzle out as we fitted them, absolute useless for our job.

The company i work for now still buy Lucas bulbs, they still work well.

I've been buying the odd multi pack of Lucas or Osram for my own stock at home online, you struggle to find good bulbs at accessory shops, either go online (take care, fakes) or visit a proper motor factor, preferably one who sells lorry/trailer parts.

Edited by gordonbennet on 14/09/2014 at 12:19

Many thanks for all your useful guidance.

I have been usung Ring bulbs but I will try and find some quality bulbs that you recommend.

Again I am most grateful to you all for passing on your knowledge