Listed on the driver's door post. If not there go to www.tirerack.com to find the correct size.
First off you should not install tires that are not the correct size. But if you do, make sure the tires on each axle are both the same size. Both front tires same size, and both rear tires same size.
All the tires should be the same size. If the other tires are in place you should be able to get the size from the other tires. If not the size should be on a plate inside the drivers side door with many other specs.
To determine the correct size bike tires for your rims, you should look for the tire size markings on the sidewall of your current tires. The size will be displayed as a combination of numbers, such as 700x25c or 26x2.0. Match this size when purchasing new tires to ensure they fit your rims properly.
To order tires online you should know the make, year and model of your car and the size of your tires. You should also know what brand of tires you are interested in and if you require winter tires or all season.
For bike tires that are 700 x 23c, you should use tubes that are 700c x 18-25c in size.
To determine the size of mountain bike tires you need for your bike, you should check the current tire size on your bike's tires. The size is usually printed on the sidewall of the tire. Common sizes for mountain bike tires are 26 inches, 27.5 inches, and 29 inches. Make sure to get tires that match the size of your current tires to ensure they fit properly on your bike.
Do you own this vehicle? It should be noted in the manual or on the tires/door jam.
probably 35'' tires or a 315
Open the drivers door and there should be an information sticker on the end of the door that shows the original size tires on the vehicle from the factory
By ratio if you mean size, the answer is no unless the car comes from the factory with a different size rear tires than front tires like some sports cars. In that case you would have 2 tires the same size on the front and 2 tires another size on the rear. You should never ever run 2 different size tires on the same axle. Therefore you would never have a situation where you would have 3 tires one size and then 1 tire another size.
For 26 inch rims, you should use tires that are designed for 26 inch wheels. The tire size will typically be indicated on the sidewall of the tire, and it should match the rim size to ensure proper fit and performance.
Open the drivers door and on the end of the door should be an information sticker showing the original size tires from the factory