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Size may be the same but the offset on those dually rims are going to be totally different from the HHR rims. My guess is you're creating a very dangerous ride. Putting the dually load/extended reach outside the stock fenders, is going to put too much stress on the stock HHR axle design and bearing.
A 3.5" spacer/ adapter should make it just like stock in the front. The back will end up about 4" wider each side.
Heck I can order a trailer axle for the back and fab the rest. I'm half thinking about moving the rear wheels back a few inches 2 trailing arms welded to the axle with spring perches on top of the axle and a shock mount.
First bumper mock up didn't work as planned but now I have a clear picture of what to do. I slapped this together months ago just guessing. Mocking up with stud is way cheaper. I decided that I'm going to use the angle of the factory brackets to push the center forward past the grill slightly and just let the ends slope back. I should have it mocked up in stud tomorrow. Once I have that how I want it I'll start fabbing the back. 2x8 steel channel isn't cheap so I'm glad to have scavenged studs laying around. So I'm thinking a 16" center section 2 miters and end caps and maybe a winch on the front. So should I go Black or green with the bumpers?
Got the front bumper mocked up. Straight wouldn't have looked right straight so I followed the line of the headlights. I like it!!! Once I get the back I'll cut the channel.
The area between the bumper and the tire... should the bumper wrap around more?
It's still an option but I kinda like the open look. I'll live with it for a few days. I still might change a few things. Maybe narrow the front to extend it maybe to make room for a winch or something. I'll tackle the rear next and look at it for a few days. Looking forward to the P40 nose art and hood lettering to get here. I'm also trying to find some old dually wheels cheap so I can order the spacer/adapters. It's cool how they're even 16x6.5 like the stockers.so I can get some good measurements.
