My guess is that the "W" wheel is white, the "S" wheel is silver.jason520 said:On tires.com they have listed the same rim in the same size, but they are separate entries. This is what is listed for each wheel's specifications:
18X7.5 5-100/114 45W
18X7.5 5-100/114 45S
What's the difference between the S and the W?