I found a nice set of oldsmobile rally wheels- 15x7 the seller believes they are a 5x4.75 bolt pattern. Will they fit on the 73 Delta 88?

 

I don't think so, the big cars are 5x5. I'm not sure if there was a big bolt pattern Olds Rallye...there were big bolt pattern Buick and Pontiac Rallye wheels.
Steve

 

You'll have to use an adapter to use them on a big car, along with all the crap associated with adapters (like having to pull the wheels and retorque the adapters every few thousand miles).

Have you considered using the Super Stock IV Polycast? It's a pretty spiffy wheel and dresses up a big Olds real nice. They look REAL good on 4-door hardtops and convertibles. Changes the whole character of the car.

 

Thanks for the responses. I look those up Rocketraider.