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My apologies if this was answered somewhere already, but I scanned the threads and didn't see it.

I ordered my RS with 19" Forged with cup tires. I also ordered the winter wheel set. When switching, will the speedo need to be re-calibrated, or as I assume, the overall tire diameter will be the same so it will not be necessary?

Thanks guys!
 

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Believe the tire diameter will not change, using a taller sidewall for snow tires, more comfort in cold, more forgiving when on icy roads..
 
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