Tires matter on same size rim?

NO a 16" rim fits a 16" tire, and a 17" rim fits a 17" tire
How to Read Tire Sizes Goodyear Auto Service Center
http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=46

P designates a tire for a passenger car, 225 is the width of the tire in mm, 75 is the ratio of sidewall height to the width (eg thesidewalls are 225*0.75=168.75 mm tall), R is the type of tire (radial), and 16 is the diameter of the tire in inches. Customizing the tires gives you different performance results.

If you want your car to act according to how the manufacturer specified, go back to the stock tires. However, your current tires have a larger diameter than the stock, which means your rims are also larger than stock; you would probably have to replace the rims as well, which can be expensive.

I would stick with your new sizes. Different sized tires will not harm your vehicle in any way. I would also recommend going to a store that offers lifetime warranties like Les Schwab; they are invested in insuring that that everything is fitting correctly so they don't have to refund you anything.

Hello Projocs03,

Tires are typically measured tire width (sidewall)/tire ride height/wheel size. The differences of the two tire sizes you published are .4 of an inch difference in width/sidewall. And about .55 in over all diameter which would impact you revs per rotation. Depending on your wheel size.

Attached is a comparison of the two given the variable of 17" rim.

Stock Tire >Search Tires Tire 1 - 255/70R17 >Search Tires Tire 2 - 265/70R17 >Search Tires Section Width: - - Section Width: 10.03 in 255 mm Section Width: 10.43 in 265 mm Rim Diameter: - - Rim Diameter: 17 in 431.8 mm Rim Diameter: 17 in 431.8 mm Rim Width Range:
Rim Width Range: 6.5 - 8.5 in Rim Width Range: 7 - 9 in Overall Diameter: - - Overall Diameter: 31.05 in 788.67 mm Overall Diameter: 31.60 in 802.64 mm Sidewall Height: - - Sidewall Height: 7.02 in 178.30 mm Sidewall Height: 7.30 in 185.42 mm Radius: - - Radius: 15.52 in 394.20 mm Radius: 15.80 in 401.32 mm Circumference: - - Circumference: 97.54 in 2477.5 mm Circumference: 99.27 in 2521.4 mm Revs per Mile: - Revs per Mile: 669.8 Revs per Mile: 658.2* Source http://www.1010tires.com/TireSizeCalculator.asp?action=submit

I added the above link so you can research further or change any variables you need to know. However, the most important thing to understand is the impact of your speedometer. Different sizes will have different impacts. For example going to a bigger tire will show a slower speed on your spedo that your traveling.

Good luck

No, it puts a hamper on rotating tires. You have 2 different sized rims and that is unusual. In most cases when you see this it is because someone is running larger wider tires on the back to achieve some custom look. I would replace 2 of them to make them all the same size. Typically in the door frame or gas cap cover in some vehicles, there is a sticker that recommends the proper tire size. In the end it won't matter if you go with 14 or 15 since that is only indicating the rim Diameter and not the actual tire diameter which would effect the accuracy of your speedometer. The Sticker or owners manual will indicate what the vehicle should have.

That depends on the type of rims that you have on the vehicle.

If the rims are stock from the factory, then open your driver door and on the inside edge there should be a sticker. It should have the size tires you need,a s well as the air pressure, listed. You should also be able to find that information located on the inside of your glove compartment. There is a label on the backside of the glove compartment door and it will also list the type of tires that came with the vehicle.

If the rims have been changed out, then look on the tires them selves. You should see a series of numbers, like 235/70R15. That would be the size of tire that is on that rim.

If this is a 4WD, or AWD, all the tires must be the same size. Don't have different sizes on different rims.

If you are still not sure, just take your vehicle to a tire store and have them take a look.

Hope this helps.

1999 Buick LeSabre Custom Front and Rear Tires P205/70R15
1999 Buick LeSabre Limited Front and Rear Tires P205/70R15
1999 Buick LeSabre PP (*) Front and Rear Tires P215/60R16

(*) PP = Performance Package

Other details can find in the Buick-Lesabre-Owners-Manual

Hope helps (remember rated and comment this).

the stock rims should be 16" making the tire size 205/55/16. let me know if you have a different rim size. you can look at the tire size on the tire sidewall and the last number is going to be your rim size. if it's a 15' rim the tires are 195/65/15 and finally for 14" rims the tire size is 195/70/14. hope this helps.

Laura, from factory the car came with 215 x 55 x 17``tires. The actual number is printed on the sidewall.
< This means you have 17`` rims, with 215 mm tire tread width and the sidewall height of the tire is equal to 55% of the tread width. This is referred to as the tires profile...
If by chance you are shopping for snow tires you can install a complete 16`` winter wheel set , tires and rims with the same overall outer diameter as a 17`` set, because the 16 or 17 only defines the hole size in the tire ....however the sidewall height and tread width would be different on a 16``tire.

Yes. The last number on a tire size is the diameter of the rim, when it changes so too must the tire. The bigger the tire the more they cost.
You also have to pay attention to the width of the rim, side to side. Somes tires need a wider rim than others, so ask when you are buying the rims what width they need tires to be because wider tires cost more too. Hope this helps.

Those wheels are what is referred to as "staggered" meaning different sizes front and rear. If you measure the width of the wheels the rear ones will be wider. I'm not sure what size you are supposed to be using but the rears should be wider. This kind of setup is not designed to be rotated. You could rotate side to side but this won't even your wear out.