Raleigh Tyres Duro Tyres Kenda Tyres. 20x1.75 Tyres. Pair of 20" Whitewall Tyres. Whitewall withBlack Tread. Kenda Tyres are made in China. Duro Tyres are made in Thailand. Ideal for Old school builds and for New BMX's or childrens 20" bicycles.