ORIGINAL EQUIPMENT MANUFACTURER
Original Equipment Manufacturer. These are original parts or subs as supplied by the product manufacturer or their parts distributor. These items are not your normal retail items. They are considered service parts by the industry. This means they are provided as repair parts to the manufacturers service companies. This is what makes them difficult for the average retail dealer to supply. Rarely are they in any type of retail packaging and OEM remotes seldom come with any instructions.
P19570R14 is the OEM for my 2005 Cavalier .
Tire Rack has an online site that walks you through all the sizes including OEM.
P185x75x14
Of course you can, but it will effect handling, braking, performance, and fuel mileage, plus your speedometer will no longer be accurate. My advice is to stick with the OEM size tire. Saying that you can change sizes if you choose a tire that has the same overall diameter as the OEM tire. For instance if you OEM size is 235/70-16 you can install a 215/75-16 which would have almost the same overall diameter as OEM.
P205/70R15
P235/70R16
OEM is P175/65R14
245/55r16
The OEM size is 7.1x15"
D78-14
DependsDepends on which model you own. The OEM tire size is listed in your owners manual and on the drivers door post, or somewhere on the vehicle (or tires themselves) The Sedan and Coupe OEM tire size is 195/70-14The Convertible OEM is 195/65-15The Z-24 OEM is 205/55-16Howeverthe most common stock tire size for 1995 CHEVY Cavalier is: 195/65-15
You look in your owner's manual and read off the OEM recommended tire size.