Proper chassis ballasting is necessary for maximizing tractive power and preventing tire slippage. When inspecting a prospective purchase, check whether rear tires contain liquid ballast like calcium chloride or beet juice. If calcium chloride was used, carefully inspect the valve stems and steel rims, as corrosive leaks can rust rims out from the inside. https://postr.yruz.one/top-7-rare-old-tractor-models-every-collector-wants