Pro Comp rims- spacers or no spacers??

I have been looking at rims for a few months now. I like the Pro Comp 7069 black 17x9. They have 4.75" backspacing with -6mm of offset. My question is will they fit without spacers??

I was looking at the Mickey Thompson Classic III but found out they will not fit, without spacers.

Second question, Those of you that are running spacers, have you had any issues with them?

Thanks for any info!!

 

I think the classic IIIs in 16"x8" will fit without spacers, 4.5" backspace, 0mm offset; just read a thread on them. Idk about the 17" size if they make on though.

 

I got them on my truck, work fine