1968 Camaro front wheel fitment / rubbing Q

[6carmello8]

I've searched and though I got a few questions answered, I'm still missing a few so I figure I'd ask.

On a stock subframe, it seems like 18 x 8.5 with a 255/35/18 will fit according to James OLC when I searched

Though I know I should match the wheels to the subframe, I have to buy new wheels first since I have to return wheels the car came with to the owner's friend. They were 15" anyways and on the car since the wheels he had on looked funny with the shortened rear housing and mini tub.

I plan on running 305/30/19 in the rear and I want to max rim width if I go to an after market subframe later.

So, What I want to know is, say I run a 245/35/18 on a 9" rim and I end up rubbing on full lock with this combo, where exactly would I rub turning right and turning left. Also, do people tend to rub turning right or left?

The reason I am asking this now is that I don't have my car on my since the car went straight to the interior shop after I purchased it, otherwise I can look and see for myself.

Thanks in advance!