Needing a Spare For Trailer Tire With no Size on Sidewall

Question:

I need to buy a spare tire for my boat trailer but dont know what the tire size is. All that is stamped on the existing tires are the following codes: DOT R2KJ, 2018, TK088-02. Can you make any sense of those? I just need an inexpensive tire to function as a spare.

asked by: Jorge R

Expert Reply:

So unfortunately Jorge, the info you provided isn't trailer tire sizing, it seems like manufacturer codes possibly. That said, there is a way to at least get a good idea and possibly the exact match by measuring. For example, if you measured your tire - when fully inflated - along with your rim, and found the rim was 13 inches in diameter, the tire was 24 inches in diameter, and the tire was 7 inches wide a match is a 175/80R13 like the Karrier ST175/80R13 Radial Trailer Tire # AM10210.

I have added links below to a help article which has different sizings on it, as well as a link to our entire selection of tires for you once you find the info.

expert reply by: Kyle S