Never run straight coolant it doesn't transfer heat very well. Ideally straight DI water is the best coolant due to its ability to absorb heat, however using pure water leads to lubrication and oxidation issues. Most race tracks especially for motorcycles ban the use of coolant and will check you radiator to pass tech they only thing allowed is water wetter (purple ice or redline water wetter for example)
Question is why would you want to do that, just run what the OEM recommends, don't try to out think the automotive engineers, they test vehicles in severe conditions for a reason, plus running 12 or 14 quarts of pure coolant is way more expensive than diluting it.