whats the biggest i can go?

hey guys, about to do my spring relocation and am going to be ordering wheels and tires soon...stock abody 8-3/4 housing, minitubbed reusing the stock tubs, springs will be inboarded to the frame...I figure i can get a 12.5 tire under there without any issues if i run a 15x10 with 7.5bs, but im wondering how tall of a tire I can go...Id like to be able to run a 29 inch or 30 inch if i could...the front of the wheelwell is not trimmed, but i will be moving the rearend back one inch...how tall can i go with just moving the rear back...by the way, car is a 71 scamp (same as dart)

thanks

1 inch back means 29 would be about absolute max...

On a dart you can get a 29-12.5-15 if you mini tubb, trim the outer lips or roll them and move the rearend back 1". Make sure you center the rear end the not much room to spare...

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On a dart you can get a 29-12.5-15 if you mini tubb, trim the outer lips or roll them and move the rearend back 1". Make sure you center the rear end the not much room to spare...

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hey man, those are the exact same tires and size that i plan on running, the MT sportsman pros (also been thinking about the similar tire from m and h, but its only a 28 inch)..I do have my wheel lips rolled as well, so hopefully with careful measuring and setup i will be able to pull off the 29 inch...I also noticed that you are running the street lites, which is the same wheel i plan on grabbing for mine...what backspace is on those, and how do you like the construction of them?