What happens when you change from Ford’s twin I-Beam front suspension to a solid axle? One thing that happens is that you gain length to your turning diameter. This means your turns are not as tight as they once were. The diagram below shows you how a turning diameter is calculated and corresponding table shows you gain about 1.5 feet on average. The left turning diameter and the right turning diameter are not always the same; therefore you must calculate it as an average of the 2 turns.
| MODELS |
WHEELBASE |
TURNING DIAMETER (ft.) 1 |
| QUIGLEY 4X4 |
FORD |
| CURB-to-CURB |
WALL-to-WALL |
CURB-to-CURB |
WALL-to-WALL |
| E-150 |
138 |
49.4 |
50.9 |
48.6 |
50.1 |
| E-250 |
138 |
49.4 |
50.9 |
48.6 |
50.1 |
| E-350 SRW/DRW |
138 |
49.4 |
50.9 |
48.6 |
50.1 |
| E-350 DRW |
158 |
55.6 |
57.0 |
54.8 |
56.2 |
| E-450 |
158 |
55.6 |
57.0 |
54.8 |
56.2 |
| E-450 |
176 |
61.1 |
62.6 |
60.3 |
61.8 |
(1) Average of left and right turns with standard tires