Rear tire height clearance 69 dart

Measure the clearance you've got with the tires on it now. The first place it'll hit height-wise is the front edge of the wheel opening. Measure the diameter of the tires you have on it now as well and compare that to the size of the tires you want to buy. Then do the math. That'll give you an idea of whether or not they'll fit. Every car is slightly different, so measuring your car will be only only way to tell 100%. If it's a tad too tight, you can always shim the front spring hanger as needed.