Being a 2000 model year explorer, there would be 2 tires sizes and one model tire. The standard tire size for the Explorer would have been a P235/75R15 with the P255/70R16 as an option (SPORT Package). The tires would have been the Firestone WILDERNESS AT tire. Being sold in Sweden, they may have been different, but I doubt it. I run Cooper DISCOVER S/T's in the winter time. They are a P235/75R15 tire. My stock tires are the P255/70R16 tire. Since I work at A Ford dealership, I drive several vehicles. I know for a fact that the Explorers with the 15" tires are more squirlly and prone to swaying that the ones with the 16" tires.