TireShift 0.1.0

TireShift is a local browser and zero-dependency CLI tool for comparing two passenger-metric tire sizes. It calculates nominal sidewall height, overall diameter, circumference, revolutions per kilometre and mile, radius change, and estimated speed under an explicit original-tire assumption. Its strict parser refuses unsupported LT, ST, flotation, and load/speed suffix syntax instead of silently producing a partial result. TireShift makes no network requests after the browser page loads and contains no analytics, telemetry, cookies, or runtime dependencies. It clearly limits its result to geometry rather than claiming vehicle fitment or safety approval.

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