2006 Toyota Sienna Rims

I'm want to buy used tires (almost brand new). The tires I'm getting came off a GrandPrix (the ad said "2002+ Pontiac Grand Prix, Chev Impala") the numbers on the tires match the ones currently on my Sienna 215/65/R16 98T. My questions is when I've looked up the bolt pattern I see the Sienna has a pattern of:

OE: 15x6
Bolt: 5x114.3
Lug: 12mmx1.5
CB: 60.1
ET: H

and the Grandprix/Impala has a pattern of:

OE: 15x6
Bolt: 5x115
Lug: 12mmx1.5
CB: 70.3
ET: H

My real question is will these Grandprix/Impala tire/rim fit on my Sienna and is it safe? I have no idea what the above numbers actually mean but I can see that the Bolt and CB numbers are different.

Please help!