[Jack21]

Faced the same dilemma. The only things the 15's get you today is more original looks, and a little softer ride. But then, there was no such thing as original 351W's, 351C's, or 460's either.

Today, you can find 17" Halibrand look alikes at decent prices, and tires from mild to wild.

For the street, 17's are the way to go. You absolutely will not believe the difference in the way the car behaves on wet and dry roads, acceleration, cornering, and braking.

Something else to consider. A 17" tire isn't larger in diameter than it's equivalent 15". A 235/60R15 and 235/45R17 are the same outside diameter; 25 1/2". A 17" has no sidewall bulge like a 15" does. If your 15 rubbed just a tad, your 17 probably won't.

Look and see what todays performance street iron coming from the factory is running.