So I'm running stock 24x9x11 rear
And 24x8x12 tires I have 12x7 itp rims I'm going to replace the stock rims with. what size
Tires would I need to keep the same ride height and width on tire making up for the larger 12x7 rims? Would a 24x8x12 tire work for both front and rear? I want to re use my mudlites is what i had in mind with out hindering any performance .Thanks for your time

 

1st number is tire height therefore is the one that determines ride height in respect to axle.
2nd is width. Determined by if you want wide skinny combo or not.
3rd is rim. Diameter

Not sure what you are asking. If you want the same ride height use 24's

26's should fit all around. I have 27" on my stock 350 but it has different fenders.