If I buy wider tires than what I have now, will I need to buy new rims too?

[Miss Seabrook]

I ordered four P225/70R15 tires online because that is what came with my truck originally. I currently have on P225/70R10 tires. Will the new ones fit?
Wow I'm a real dunce!! I looked and it does indeed say they are 15" rims. Hahaha! Thanks dude!