If my current car came with 205/55R16 all-season tires, would it cause any problems to use my 185/65R15 winter tires that I didn't sell when I sold the old car?

Both sets of tires are mounted on matching rims, so the rims aren't a problem.


It should not be a problem, the difference in diameter is -1.6% according to this web site (https://tiresize.com/) so your speedo will be off but only by a small amount, you will be doing 59 when it is actually showing 60 and that's about it. Also you manufacture might have included +1 and -1 size tire sizes on the side of the door you might want to check them out.

  • 2
    Also the correctness of the speedo will vary as the tires wear down anyway. – Ryan V. Bissell Oct 18 '16 at 4:15
  • If tires are smaller, they have to do more revs for the same speed. So the displayed speed is higher, not lower. – sweber Oct 18 '16 at 6:36
  • @sweber you are right, edited – method Oct 18 '16 at 6:42

As mentioned in other answers, the difference in size is manageable. A good rule of thumb is to keep it under 3%, you are at 1.6%.

Bearing that in mind, the next time you are shopping for snow tires, if you want to keep your 15-inch rims, get tire size 205/60R15, it's only off your stock size by 0.8%.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.