What is the ideal bs for a 15 x 7 rally wheel on a 67 camaro. I have seen 4", 4 1/4 ", and 4 1/2 ". Mine are 4 1/4 ".

8" is 4.5"

So 7" I would guess would be 3.75"- 4" ???

3.75" on a 15x7. 17" diameter and higher, 4" on a 7" wheel.

'67SS stock is 14" x 6" w/ 3.75" b/s so go from there!!

My old painted rims are up on my shelf out in the garage too along w/ my, three "dog-knot", dog dish hubcaps!!

pdq67

4 1/4 are probably the best but its a personal choice in the end, and it depends on what look your going for and what will physically work ie tire size