There is a sight tiresize.com where you can plug in your size and it will show you compatible sizes with Diameter, Circumference, width, sidewall height, and Revs per mile to keep your speedo accurate. in checking your size, says no tires available. in switching to 19" it shows 235/55/r19 to be equal. this is a good reference source to play with different combinations. Also good place to determine how far off your speedo will be if you change sizes. Good luck!