Tire size 70 265 r17 - 2004 Mercury Mountaineer

You can, unless it is 4 wheel drive. if it is 4 wheel drive, it will be hard in your transfer case having a different size in the mix. if not, or if you are changing all 4 tires, your seedometer will just read a bit faster

shouldn't be a problem - the size difference is in 20mm in width of the tread and 13mm in sidewall height - which will be 26mm in tire height total. If will throw your speedometer off a little so keep that in mind.

One tire size won't hurt. It will affect your speedometer by about 2MPH. That's it. Hope this helps.

Thay did not put your tire sensor back in if you had any.

HERE IS THE REAL QUESTION YOU SHOULD ASK OF THE DEALERS WHO ARE OFFERING 17" OR 18" TYRES FOR A TYRE SIZE THAT DOES NOT FIT YOUR EXISTING WHEELS......HAVE YOU GOT 17" OR 18"WHEELS???......225/45 ARE GOOD.

use the same size for winter tires, a tire store may be able to change the size a little but the rim size has to stay the same. unless the rims are being changed.

There should not be any problem with fitment. The 235/75/17 is only going to be about ½" taller but it is also going to be almost 2" smaller in width. Should fit fine.

The 275/60/17 = 30" x 11" to round it off
The 235/75/17 = 30.8" x 9.25"

Yes, go ahead but all must be changed.