How to Determine Wheel Bolt Pattern For Boat Trailer With ST185/80-13 Tires

Updated 05/31/2024 | Published 05/30/2024

Question:

Need to know what spare tire/wheel is available for a 2014 Karavan tritoon boat trailer. The trailer has a plate with Job 415310 and this 5KTPS3023FF503212. It has ST185/80D13C Carlisle tires on galvanized rims. Looking for a complete spare tire w/rim in case I have a flat. What do you have and how do I know it will fit my trailer?

asked by: Mike C

Expert Reply:

Hey Mike,

So the ST185/80D13 is the size of tire, though to know what will fit, you have to know your wheel bolt pattern. I have added a link below to both a help article which shows you how to measure, and printable template you can use to determine that.

It is most likely a 5 on 4-1/2" bolt pattern as that is the most common, though you'll want to verify using the template or by measuring. If it is 5 on 4-1/2" you can use the Loadstar ST185/80D13 Bias Trailer Tire with 13" Galvanized Wheel - 5 on 4-1/2 # AM3S334.

expert reply by: Kyle S