system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] If the Flash lost his protective aura against external friction but kept his super-speed, what would his maximum safe speed be? Could a protective suit help by much?
gpt
He'd still be pretty dangerous.

Look at wing walkers/high speed motorcyclists.  You can go up to 200 mph with just normal leathers.  And in a fight he could punch a crook dozens of times before the baddie knew he was there.

If he could sweet talk Kal-El into giving him some Krytonian cloth and put some padding under it, he should be fine.  [padding for hitting a fly at 1000 mph]