Does what I'm asking for make sense??
Traditionally, Plus-Sizing tires means a rim/tire combo that is
both taller
and wider than what came on it from the factory. Original height is maintained because only the rim(not the tire) increases in diameter, and thusly speedo is maintained. Well who and what army, LOL!, says plus-sizing HAS to go in both directions(taller and wider)??
What I'm looking to do is take a car with, say, 14" rims with 75-series tires, and go to 15s or 16s
of the same width, and slap lower profile rubber(65-55 series) on them to firm up my ride and maintain speedometer. I'd love to do this with the mid-60s Buick I hope to acquire one day. After all a narrower tire/wheel assembly is more directionally prone than a wider package given the same aligment specs, right? The part I want to cut down on is all that floppy sidewall!
Is there such an animal?