eBay adds fitment for tires and wheels by specification: instead of a vehicle compatibility list, the listing must include the item specifics below. Set the product's eBay category in the product's eBay tab and the category-specific item specifics will load there for you to fill in.
Tires (category 179680, formerly 66471):
Section Width
Aspect Ratio
Rim Diameter
Load Index
Speed Index
Wheels (category 179679, formerly 43953):
Rim Diameter
Rim Width
Bolt Pattern
Offset
For more detail, see eBay's Parts Sales Hub.