Installing bed tubs will create additional room to mount wide rims and fat tires onto the rear of your pickup.
Images and text by Steve Stillwell
When I made plans to build my 1956 Ford F-100 I immediately knew that I wanted to have it roll on a combination of 18-inch front wheels and 20-inch billet wheels for the rear. I wasn’t targeting the pro-street look, but wanted a minimum of a 20 x 10 inch rim for the rear, which a couple of buddies told me was impossible to do on an F-100. I was now inspired even more to prove it could be done, without having rubber sticking outside the rear fender lips. After all, you cannot have any suspension travel if the tires are about to hit the fenders, and I was also going to slam this truck’s ride height to the ground!
As you can see from the photos, I opted to pre-assemble this truck using a cut-up cab that the guys had in the R&D shop at Total Cost Involved, the manufacturer of the custom chassis. My son Cory and I assembled the bed and placed the proto type cab in place. We hung the bedsides onto the beds cross braces as well as brand new steel fenders. The tires, rear end width and bed sides were fighting for the same space as it just didn’t fit. At least not the way I wanted it to.
The resolve. Dan Carpenter Specialties manufactures inner fender bed tubs specifically designed to create additional rear tire clearance for old Ford trucks. These are available in 2 ¾ or 4-inch widths. Carpenter’s main business is complete replacement beds for classic Ford trucks, and the sides can be ordered with the tubs installed if you really wish to simplify life. I had a new Pro’s Pick bed, so my best option was to order and install Dan’s bed tubs.
The standard width of the stock 1956 Ford F-100 rear end housing is 60 inches wide, axle flange to axle flange. I opted to have Currie Enterprises, the rear end manufacture for this project, make the rear housing 57 inches wide which made room for the 10-inch wide Colorado Custom billet wheels, specially manufactured to simulate the old steelie look, but in 20 inches! The interesting point is 17-plus inches of room between the frame rails and fender lips. Plenty of room, however the bed wood was now in the way. Several modifications were going to be made to accept these fat billet wheels including trimming
two bed boards down to the width of the frame rails and installing the inner fender bed tubs.
With plenty of room for the rear tires, the TCI chassis, equipped with ShockWaves (air suspension), can now lay the running boards flush with the ground – even with 20 inch wheels! Follow along as we should you how to perform the bed tub installation.-SS
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