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The difference would be marginal, I really don't think yo'd need to re-calibrate. Just keep in mind many car models are available with a variety of tire sizes, each just a little different. Even tires which *should* be the same size according to the designation ont heir sidewall can vary from each manufacturer and even between different tire patterns from the same manufacturer. For offroad cars the difference in diameter can sometimes be up to an inch!
Just increasing the tire pressure won't do much (if anything) to increase its diameter. Modern tires are all steel belted anyway, they don't 'balloon'.
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