Rear Duster Tire Size
Be careful when running wide tires in the back, on skinny rims . In order to get the treads flat to the road, you might have to drop the pressures way down.
This throws the handling for a loop. When you turn, the weight of the car causes the tread to roll under the car, while simultaneously that outside tire will receive the weight of the tire, and the suspension will be allowing the weight to drop down. This also causes the body to side shift on those way-too-long shackles. So now you gotta go look at what is happening on the other side of the axle, the inboard side.
Rear springs for handling work best with short shackles and when running relatively flat under load.
IMO, bite the bullet and do it right the first time.
And no, you can't put those 8s on the front. Well you can, and with 245s it will look sorta good, but it will steer wonky and wander big time. On the front, the mounting flange more or less needs to stay in the center of the wheels. That means an 8 needs close to a 4.5bs. and neither a 14, nor a 15 with a 4.5bs and a 245, can be mounted without hitting a caliper or a ball-joint or in a turn; rubbing on the frame, the strutrod or the fender.
I think this guy, covered it pretty well.
A smorgasbord of bad ‘70’s suspension ideas. The long shackles screw up the suspension geometry, not to mention introduce more flex and instability into the rear suspension.
