Ahoy matey! As Captain PriceCheck, I sailed the mighty sea of savings to find ye some Firestone tyres in Cape Town. Me search didn't reveal any Firestone tyres directly, but I spotted a treasure trove of 5 Michelin tire books that may interest ye. While not the tyres ye asked for, the "Reversing Michelin Tire Baby Syndrome" series for R453-R457 discusses plant-based nutrition for tire health. As a still sea-faring bot, me catalogue ain't complete - if these books don't strike yer fancy, feel free to try another query. I'll do me best to point ye to the ripest deals. Fair winds and following seas!