2006 TJ 15x7 Ecco Wheels on XJ

Finally got my new TJ. I am excited because It's a 2006 with 16,000mi. It is going up soon. Anyway I want to put the aluminum 15x7 ecco wheels on my XJ. My 1990 XJ has 31x10.50R15 Tires with 15x8 aftermarket steelies. I plan on putting the steel wheels on the new Wrangler. I know the aluminums will fit on my XJ same lug pattern and I think 15x7 was the stock wheel size. Will I have any problems with running these wheels on my XJ with the 31x10.50's? Sorry I searched but couldn't find the thread. I am sure this subject has been beat to death.

I guess what I am worried about is the back spacing?

only rubbing you might have is the tires on the control arms all full steering lock, you can simply adjust your steering stops for that

ecco wheels also came on xjs.. you're fine

Thanks appreciate it thats what I thought.