My 8" wide with 4.5" backspace is about perfect as for centered in the wheel well....a 10" will stick out 2" more with the same BS....I would not go with more in a stock wheel well unless plus sizeing.
Now "IF" your disc set-up add's 1" to the mounting flange, I would add that amount to the BS.

I would wait until the disc's are on and measure to be sure.

Good luck :beers:

 

Thanks for the info I will wait the car has adjustable shackles it will stick out it is what I want but was worried about the inside rub but in any case I will wait till the disc conversion is done It’s a Baldwin motion replica in process so the shackles were used in 69 on the camaro to clear the vette tally wheels in the rear

 

Pretty sure they won’t rub on the inside. The correct backsping for a 10” wheel is 5.75”.

Must be going for that old school jacked up look....

Don

 

4.5" BS x 15x 10" centerline wheels with cooper 295x50x15 tires, they extend 1.5" beyond the fender

 

Thanks for the information yes going for old school I like the look on the 68 or 67 camaro

 

Update I have the 15x10 with 4.5 bs lifted high in the rear with shackles when I turn I feel like a boat in the water turning going back with my 15x7 and lowering the car