Compression Ignition Addict
Join Date: Feb 2007
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You can run a 305/70, some people run a 315/75 with no problems on stockers with no lift. When you start getting into aftermarkets with bigger back-spacing, that's when you start getting the rub. On stock wheels with a 315/75 you might be ok, since you have no leaf springs to rub.
I ran 305/70s on mine stock for a while, but when I went to a 16x10 wheel, I had to lift it to clear.
2010 F250 Lariat FX4 6.4l
Carli Backcountry 2.5", 11+ Leaf Springs, SCT 3015R/Tyrant Tuned, Edge Insight CTS,
FloPro DPF Pipe, RCD EGR Delete/Elbow, Sinister Coolant Filter, 11+ Console