Help me with wheel offset....
I have method double standard 18x9's with +18 offset. Tires are 275/70R18's and they are prefectly flush with that setup.
What width 20" wheel are you looking at? Assuming they are also 9" wide, then I think it would work like this: you have to add half the additional width of your tire. I believe the total width is 0.8" wider than mine, so it will stick out 0.4" further. Then take the additional offset. +14 you would stick out 4mm(0.16") more than mine and +1 would stick out 17mm(0.67") more.
So, roughly, I would think the +14 would stick out 0.56" and the +1 would stick out 1.07" from flush.
What width 20" wheel are you looking at? Assuming they are also 9" wide, then I think it would work like this: you have to add half the additional width of your tire. I believe the total width is 0.8" wider than mine, so it will stick out 0.4" further. Then take the additional offset. +14 you would stick out 4mm(0.16") more than mine and +1 would stick out 17mm(0.67") more.
So, roughly, I would think the +14 would stick out 0.56" and the +1 would stick out 1.07" from flush.
Are they perfectly flush with your fenders? That sounds great.
Would love to see a picture...About to place an order for the Roost model in 18X9 in +18
I have 35 offset, my fronts are flush but my rears are tucked in 1/2"
20 offset will get you flush in the rear with a 1/2" beyond the fenders in the front
Good luck






