15 designates size of rim
Tires Size - 215/60/R15" Rim Size - 15 inches
If you are looking for the tire/rim size for a 2003 Oldsmobile Alero. It is listed here. Tire Size - 215/60/R15" Rims Size - 15 inches
Depending on if it came with 15" or 16" wheels. 215/70-15" 215/65-16"
The tire/rim size of a 2003 Oldsmobile Alero is listed right here. Tire Size - 215/60/R15" The rim size is 15 inches, so I am not sure about 20 inches. You might want to consult a Mechanic.
215-60-15
it is 215/70/15
215/75/15
215/50/15
215/70/15
215 60 15
215/75/15
Check the lable on the driver's door jamb for the factory size. Should be a 215 70 15 or a 235 70 15Check the lable on the driver's door jamb for the factory size. Should be a 215 70 15 or a 235 70 15