Check here:
http://www.mustangsplus.com/xcart/home.php?cat=2124

 

I put on the 4 leaf reg. eye springs, the ride hight is about 3/4 inch higher and new gas shocks the ride is furmer and inproved, but still rubs when I go over a dip in the road, the tires are 225 60 15 in rear, 3.75 back spacing, I rolled the edges to help but no luck.
Thinking of going to a high presure shocks?. there is about 2 1/2 or three fingers between the tire and the 1/4 lip.

 

Shocks do not alter ride height, that's the function of springs. The problem is that your backspacing is wrong. The tires stick out 1/4" too far because of the backspacing. The solution is to either switch to 215 tires, or get rims that fit.

 

Thanks I am attempting to get The tire store to replace the rims, but they have said no from day one, today when I returned to see if the manager was back from vacation, the salesman wanted me to get a set of overload shocks to keep it from rubing. 4" or 4 1/4 " back spacing is what I want.
I now replaced everything that they used to say it ws my cars fault.

 

Tell the salesman to shove it. None of them know a damned thing about your car. They're just trying to avoid taking the wheels back because they can't return them to the factory anymore. The upper shock mount isn't designed to take any significant portion of the vehicle's weight, so any kind of air or overload shock is going to eventually punch through the bottom of the car.

The only reason the tires rub is because the wheels are the wrong backspacing. Period.

 

Minor clarification, if I may.

Gas pressure shocks (i.e. Bilsteins, KYB Gas-A-Justs) will raise the ride height up a little as compared to the same car on non-pressurized shocks. As in maybe half an inch. But in these cases the ride height change is strictly a side effect. Not the main purpose.


Springs should get changed when they lose ride height, or when you're changing them out for springs that are better suited for a particular purpose and you know what you're looking for.

(I'd have said that the air shocks should have been changed out yesterday if not sooner.)


Norm

 

I agree, the So called manager is to return back to work today so we will see, what back spacing should I tell them 4.0, 4.25, or 4.50 not the 3.75 they put on.

 

http://www.dodgestang.com/Tire%20Fit...ide%2065-6.pdf

look on that chart and see what suits you best.

if you are a 15x7 wheel on a stock suspension & drum brake '65 you want a 4-4.25 backspacing to run your 225/60/15 tire set up

 

I agree the wheels are the wrong backspacing. The backspacing should be 4.25 for 15x7. Thats what I have on mine with 235 60 15 rear.

 

My replacement rims will be here next week 4.25 BS