What size off-set/back spacing should i get???

[2bmudin]

I have a 02 Ford F-350 single rear wheel. I just run across a 6" rough country lift and a set of four 36x15.50x20 mickey baja mtz's for a great price and bought them. I'm going to buy a set of 20x12 wheels. what off-set/back spacing should I get on these wheels for less worry about rubbing since the tires are 15.50 wide? I don't do much off roading if any at all in this truck. Any help or input would be great. thanks

[psd_va]

Don't have a lot of experience with offset but I have something like a 50mm offset with a 38x15.50 tire and don't have any rubbing issues

[Brian 444]

You are going to have a tough time fitting 15.5" wide tires and 12" wide wheels under 6" of lift. Most 12" wide wheels have a deep negative offset (-44 is pretty common) and those are going to rub even on a street queen.

[2bmudin]

I was looking and 10" wide wheels look to have mainly a -24mm offset. would this offset be better or worse than the -44mm offset on the 12" wide wheel for what i'm trying to do? would a 15.50 wide tire fit on a 10" wide wheel? and fit without wearing the tire out quickly?

[Brian 444]

I have run 37x13.50 Nitto Mud Grapplers (which actually measure just over 37" tall and just over 14" wide) on a 10" wide wheel with -24 offset and 6.5" lift. It rubbed badly enough to crunch the rear corner of my front fender once but that was offroad. Street driving was never a problem with rubbing at all after I pulled the fender liners back just a tad.

Bottom line...15.50" wide tire on a 10" wide wheel with -24 offset should fit with minor trimming if it is on-road only. See what the mfg lists as minimum rim width on that tire. I think you should be fine.

[psd_va]

Have you thought about adding 2" front brackets to give you that extra clearance. Shouldn't cost that much

[2bmudin]

Guess I'll just have to try it and if it rubs horrible add a 2" shackle/hanger lift on the front