I have the flaming river 16:1 215/65-15 cooper cobras up front 275 rear. This was my previous alignment when I had them try to do the best they could from the skosh chart. Street and strip, but not bracket racing.
How does it steer at low speeds. Do you do much low speed maneuvering; parking lots, driveway, etc?
It's a lot of what the driver is used to and finds acceptable.
235 and wider up front will start being noticeable difference.
Guy in club has a 4spd 69 Roadrunner with 16:1 and 235/60/15's up front. He didn't complain. But when he changed to power steering, he wished he would have sooner. He lives in suburban LA area too.