FINALLY!! Fresh M/T ET Street S/S’s

Nice!! What tires are your replacing? I only ask because I'm curious how close in size they are to a true 255/60, or if they're any bigger. I've got 275/60 Cooper Cobras that I'd like to replace with the same size M/T ET Street S/S's, but I have zero extra room.
They are slightly taller and wider than the street radial 255/60-15’s that I’ve had (Cooper Cobra) and have (Vitour GT)
Not 1/2 way between 275/60 and 255/60 mind you, I’d say just a little plumper than the street 255’s
I’ve got rims for the Vitour street tires and rims for the track use only M/T’s.