Trailer Tire and Trailer Wheel Size Compatibility

Question:

I upgrade my wheels to alloy and my present tyre size is 205/80R13 can i use smaller tyres of 185/70R13.please help me. I cannot find tyre of that size so causing lotsa problems..!!

asked by: Eric

Expert Reply:

Trailer tire size 185/70R13 can fit on a 13-inch diameter wheel of several different widths. This tire size fits wheels that are 13 x 4-1/2, 13 x 5 and 13 x 5-1/2-inches. A tire of size 205/80R13 will fit on some of the same wheel sizes, 13 x 5 and 13 x 5-1/2-inches, and wider ones, but this tire is too wide to fit on a 13 x 4-1/2 wheel. The linked articles on tires may be helpful to you since one lists many popular trailer tire sizes and and the wheels each size fits and the other covers many common questions.

These two tire sizes have different overall diameters. The 185/70R13 tire has an overall diameter of about 23.2-inches and the 205/80R13 tire has an overall diameter of about 26-inches.

expert reply by: Adam R