[JB86'd]

I got a set of 17x7 +42 RPF1's from Tire Rack a while back, and they didn't come with hub-centric rings. I installed them slowly and hand tightened and torqued them, and ran a couple autox events with them and drove a couple hundred miles and everything felt fine.

On Tire Rack when looking at Enkei 17x8 PF01's and 17x8 RPF1's the product information says that hub-centric rings are included, and with 17x7 RPF1's they are not. Does that mean it's not necessary with my 17x7 RPF1's? Can't seem to find the hub-bore measurement for the 17x7's.