Confirming Wheel/Tire Size - 69 Camaro

[mtm87tx]

Gents,

I am alittle confused on what I need to do to make sure these wheels will fit my car as they are not standard



I am looking at the US Mag Rambles in 18x8f and 18x9.5r. The rear wheels have a 4.25" BS and I know that 4.5" is ideal. Every car is different by alittle so how do I check that these wheels will fit my car before I order them?

I am planning on using BFG Sport comp 2's in 245/40 and 275/40 tires