I have a 2010 F350, and for replacement tires and wheels I've settled on Hankook Dynapro ATM 325/60R20E S126, on 2Crave NX1 20x10 -25mm offset. And I'm getting a 2 1/2" levelling kit.
Using basic dimensions from Custom rims, wheel tire packages for your ride - RIMSnTIRES.com
, and using simple trigonometry, I figure that the new set-up will have a max radius of 19.22 in to the outboard corner. The stock set-up has a -40mm offset on the 275/65R20, and the max radius there was 18.42 in to the inboard corner.
So, the new set-up will require an extra 0.80 in radial clearance. When I turn the wheels to check existing clearances, it looks like I should be able to get away with the new set-up by removing the mud flaps.
1) Has anyone run 325/60R20 wheels with just a 2 1/2" levelling kit AND a -ve offset wheel of -25mm?
2) Is keeping the new wheel offset closer to 0 the safer bet?