Well since you have a '69 Bee, I'll see if I can help you out with your question.
I have a set of each of the AR Torq Thrusts and Magnum 500 Road Wheels on my two Coronets. Both sets are 15"x 10" wide rims with 5" backspacing, NOT 5 1/2". I'm using the 295/50/15 tires, BF Goodrich T/A's. I've been driving both cars with these wheels/tires for several years now and NO problems at all. As for CRAGARS, I do not know if they have a 15x10" wheel available. A word of warning on the Torq Thrusts, with the center caps installed you CANNOT get a socket or lug wrench on the lugs should you have a flat while on the road. You have to take the center caps off in order to remove or install a wheel, which requires removing 5 small allen head screws in each cap. A real PITA, and American Racing customer support is REALLY LOUSY. They deny that the problem exists, even after I provided detailed photos of the interference of the caps, although they did say they were aware of the same problem on A bodies. Basically, they already had my money and just told me to "get lost". I'll never purchase another product from them ever again. To solve this issue, I modified the center caps to match the contours of the wheel so that I could get a socket on the wheel lugs without removing the cap. But, I shouldn't have had to do this if they would only engineer their products correctly in the first place. It is time consuming to hand modify the caps, but I now can change a tire without having to remove the center cap first.
Link to Magnum 500's
http://www.summitracing.com/parts/wvi-54501205/overview/
Here is a couple photos of the wheel/tires on my cars.
View attachment 313159
View attachment 313160View attachment 313161