It's fine. They're stiffer and less grippy so expect a reduction in handling and braking performance. So like a new or 15 year old pirelli p6000 tyre.
Doubt you would notice in a 240.
Think they also have a Q speed rating which is 100 mph? Check with your insurers if it's ok, if you're one of those who does such things.
__________________
MY97 940 CD LPT Super Sports Edition 2 Turbo, Midnight Purple, 175,000 miles.