I have been using a 2 piece wheel adaptor from Motorsport Tech on my jeep for years with no issues. Now I wheel the **** out of my heavy pig jeep. I couldn't be happier. When I ordered them they took a while but they were in the middle of moving. He even kept the price after he found out he had a website bug & sent them next day air since they took so long.
i'll second that!!! i have BORA spacers from Motorsports tech too. on my rock crawler and super duty. the only isssue i have on the super duty is i keep blowing out front wheel hubs. i just blew on last week and that #8 for me.............. EIGHT OF THEM!!!!!! i think its because i have a bad brand from oriellys. so im switching from Precision Bearings to TIMKENS
but my truck is on 38x15.5s
my wheels are 20x12 with -44 off set and with wheel spacers that means i have about -94 off set which would be hard on any hub any ways
so after 2 years of blowing hubs every 1,000 to 5,000 miles
i'm going to stop running spacers and get TIMKEN bearings
and then eventually switch over to 05+ axles with 4 link and coil overs to get that "Stance" back and have a better ride
but i now hate spacers due to the fact my hubs suckkkkkk. but the spacers did great!!! if your going to get a set, get BORA ones from Motorsport tech
if your running 2" spacer YOU MUST!!!! I REPEAT YOU MUST!!!! OR YOU WILL DIE!!!! GRIND DOWN THE STOCK STUDS ON THE FRONT ABOUT 1/8" SO THAT THE WHEEL WILL BE PRESSED UP AGAINST THE SPACER AND NOT THE STUDS. THE STOCK STUDS STICK OUT ABOUT 2 1/8". SO THEY JUST NEED TO BE GROUND DOWN A LITTLE, ITS NOT ENOUGH TO RUIN THE THREADS. JUST GRIND THE TIP DOWN A LITTLE OR YOU WILL RUN INTO BIG PROBLEMS LATER ON AND PROBABLY LOOSE A WHEEL,
ASK ME HOW I KNOW.
i have 70k on mine i wheel when i get a chance and live on a dirt road most pavement princesses would turn and run from no issues...just sayinHave over 10k on mine and haven't had any issues, knock on wood. I check for play in the bearings periodically and haven't had one go yet. No hubs either.
Most of that is on the street though so it may not be much help.
THIS!!!!Just be sure to buy machined metal spacers made in the USA, and not the cheap Chinese aluminum ones.
As far as axle stress, I asked my Ford Diesel tech about that. He told me that the single rear wheel truck have essentially the same bearing assembly as a dually, which have a great deal of offset on them. He said not to worry, and just buy quality spacers.
I just ordered a set of 1.5" spacers from Stahl for $500 to run factory 20" wheels off a 2016. They have a lifetime warranty and are covered by a $2,000,000 insurance policy for damages to my vehicle and myself. I talked to the owner of Stahl and he told me they've never had a single failure yet, other than someone over torqueing the lug nuts and breaking the studs off (which they replaced). The studs are grade 10, while Ford uses grade 8.