What is Largest Trailer Tire Size that Has 4 on 4 inch Bolt Pattern
Published 09/24/2025
Products Featured in This Question
Question:
I have a vintage boat trailer with 5.30 - 12 tires on 12 rims with a 4 x 4 bolt pattern. I would like to upgrade to as large as possible, space permitting. I see 185/80-13 may be the biggest option, limited by the 4 x 4 bolt pattern and that there are no 14 options. I would like galvanized or aluminum rims. Do you have any recommendations? Thanks !
asked by: Ted S
Expert Reply:
Hey Ted, the largest diameter tire size we have that is on a 4 bolt mounting pattern is the 185/80-13 tire size which is 24.4 inch in diameter compared to what you have now which is 21.9 inches. This would raise your trailer 1.2 inches. The tire would also be 2 inches wider. For a tire we have the part # TA39QR and then for a wheel # AM20224.
Product Page this Question was Asked From
Provider ST185/80R13 Radial Trailer Tire - Load Range C
- Trailer Tires and Wheels
- Tire Only
- Radial Tire
- Load Range C
- 185/80-13
- 13 Inch
- M - 81 mph
- Taskmaster
more information >
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Ted S.
9/24/2025
Great, thank you !