wheel alignment

So i had my lift install for about half a year now, and I've decided to get new wheels.
When i had the lift installed i got a wheel alignment done and everything seems to be running as per normal.

So my question is, when i get new wheels do i need to get another wheel alignment do the the new wheels having different specs then the stock ones?

I will be keeping a 16 inch rim but it will have a different back spacing.
any help or info you got would be great

Thanks

 

You shouldn't. But it's better if you get a lifetime alignment somewhere. Then just take it whenever you want

 

For the $50-$60 it costs I would go ahead and have it done. Cheap tire wear insurance if nothing else.