I've been following several threads about how large a tire can be. I've also read from numerous sources on how to take measurements for determining backspacing. It still doesn't make sense to me. When reading about it, it all sounds so simple.
I pulled a rear tire off my son's car to begin the measuring process. What I found under there is not as simple as it sounds. The car is a stock '74 Dart Sport, but I swapped in a LBP rear axle from a '76 Duster. It fits in the exact same location as the original SBP from the Dart. The problem I have is determining where to take measurements along the rounded inner fender to determine the widest points. The edge of the wheel lip where the molding goes is not really the key to this, because the inner fender bulges inward immediately behind the lip. From there, it begins to follow a rounded arching shape up over the tire to the frame side of the wheel well. At one point on the face of the wheel well (towards the trunk), there is a small bulge protruding out to allow space inside the trunk for the deck lid hinge.
I really need to visit with someone who has first-hand knowledge of this Dart Sport / Duster setup. I am trying to determine how to order some 15x8 Cragar SS wheels, with the proper backspacing to fit wider tires than the skinny 215-70-R14 tires it currently has.
If you think you can help, please send a PM or e-mail.
Thanks,
Jerry [email protected]
I pulled a rear tire off my son's car to begin the measuring process. What I found under there is not as simple as it sounds. The car is a stock '74 Dart Sport, but I swapped in a LBP rear axle from a '76 Duster. It fits in the exact same location as the original SBP from the Dart. The problem I have is determining where to take measurements along the rounded inner fender to determine the widest points. The edge of the wheel lip where the molding goes is not really the key to this, because the inner fender bulges inward immediately behind the lip. From there, it begins to follow a rounded arching shape up over the tire to the frame side of the wheel well. At one point on the face of the wheel well (towards the trunk), there is a small bulge protruding out to allow space inside the trunk for the deck lid hinge.
I really need to visit with someone who has first-hand knowledge of this Dart Sport / Duster setup. I am trying to determine how to order some 15x8 Cragar SS wheels, with the proper backspacing to fit wider tires than the skinny 215-70-R14 tires it currently has.
If you think you can help, please send a PM or e-mail.
Thanks,
Jerry [email protected]