A little background on the Bronco:
Axles are full width - front is a Dana 44 from a '78 Bronco, with GM 3/4 ton (8 lug) knuckles, spindles, hubs, brakes. Rear is a Dana 60 from an F350, full float, with custom disk brakes (GM 12" 8 lug rotors, Cadillac E-brake calipers). Custom extended radius arms, front and rear shock hoops, longer shocks, relocated bump stops, etc.
Body is an all-new steel body from Rust Belt Broncos, with flared rear quarters and '77 front inner fender to clear power brake booster. Plenty of room for 35's in the rear with the flared quater panels, even at full stuff. Was hoping to not have to cut or trim brand new, expensive front fenders, but....
I haven't painted the new body yet, figured I'd better make sure everything fit before I did, in case trimming was needed. Supported the chassis on my lift, removed the front coils, and cycled the front suspension from full droop to full compression, and full left and right steering lock.
I have 2 sets of wheels/tires - 35x12.50's on 15" steel rims with lots (probably too much) of offset, and 315/70/17's on Dodge Ram 17x8 (8x6.5 bolt pattern) factory alloys. The 15" steel rims BARELY clear the GM front calipers (I mean, like feeler gauge type clearance), and the offset puts the outer sidewalls almost 7" outside the fenders, 84" total overall width - too wide too even fit on a trailer. The 17" rims have much more positive offset, they tuck the tires into the wheelwells much better - plus plenty of clearance for the calipers. With the positive offset, the 17" front wheels pivot around the ball joint centerline, instead of "swinging" in an arc like the 15" wheels with the negative offset do - which helps a lot with fender clearance as the tire moves through it's travel.
Pic is LF wheel at full left lock, full compression (on the bump stops). Tire is just an old spare I had mounted just to check clearance. There's about 1/2" (finger width) between the tire and the rear of the fenderwell as it pivots. The blue masking tape at the lower rear edge of the front of the wheelwell is where I'll have to trim the sheetmetal to clear the tire for right turns. Not much, but was hoping to avoid it.
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