I don't know much regarding changing out rims and tires. This is for an '03 FX4 SCrew..

Centerline Wheel (HT Cast):
size: 16.5x9.75
backspacing: 4.0"
bolt circle: 5-135mm $ 119

My questions:
1) How is that backspacing?
2) I'm originally looking for a 16x10 rim (w/ 305s). Does 16.5" cause any problems using a 16" tire?

They look very similar to the Eagle 184s

 

I would not go with 16.5 rim. It is difficult to find tires and they have problem with tires staying on the rims. i would either stick to 16" or 17" rims

 

Smokey -
Thanks for your reply. The Centerline and the Eagles are almost identical in looks. The Eagle 184s do come in 16x10.