4x4 Vans : Quigley Motor Company, Inc. > Technical Center > GM Tech Center > Turning Diameter

Turning Diameter

What happens to your turning diameter once Quigley install your Independent Front Suspension (IFS) 4x4 system? Nothing, your turning diameter remains the same as the 2-wheel drive OEM GM vans. 

The diagram below shows you how a turning diameter is calculated and corresponding table shows you the comparison between our 4x4 IFS system and GM’s OEM 2-wheel drive. 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 GM
CURB-to-CURB CURB-to-CURB
G-2500 135 49.2 49.2
G-2500 155 54.5 54.5
G-3500 135 49.2 49.2
G-3500 135 54.5 54.5