What is better? Platinum or Iridium plugs?

I am personally running copper plugs, cheaper and copper is more thermally and electrically conductive. To answer your question out of platinum and iridium, iridium is better. Iridium is more expensive, but melts at a higher temperature and does not oxidize.

Usually the highest price are better...iridium. They are usually only needed in high performance applications. A good set of platinum plugs is usually all you need.

for you specific vehicle or in general?

1.iridium plug are oem in some newer vehicles,they also cost alot more from 15.00 to 18.00 a plug.(new vehicles dont require tune ups for 100k miles).

but no matter what plug you choose if your engine is worn or has other problem you may just be throwing your money away due to prematurely worn or fouled spark plugs.

For the average auto that is unmodified or not used in some sort of competition the manufacturers suggested plugs should do just fine....see your owners manual

If your car is un modified then watever plugs the factory uses is the best.

I use BOSCH platinum "just the basic ones".