How to Determine Bolt Pattern for a Trailer Wheel Replacement

Published 04/17/2014

Question:

I have 4.80/4.00-8 tire/wheels on my trailer and want to go up in size for off-road clearance. I purchased 4.80-12 tire/wheels and they dont seem to fit properly. Is this due to the hub size?

asked by: Chris

Expert Reply:

It sounds like the new 12 inch wheel and tire combo you have is designed to fit a different bolt pattern hub than what your trailer currently has.

The bolt pattern of a wheel tells us the number of lugs (or bolt holes) and the diameter of the circle the lugs sit on. For example, a 5 on 4-1/2" bolt pattern lets us know we need a wheel with 5 lugs that are spaced out evenly on a circle that has a 4-1/2" diameter.

Most likely your trailer either has a 4 on 4 inch bolt pattern or it has a 5 on 4-1/2 inch bolt pattern and your new wheels are different. To determine your bolt pattern on your wheel and on your hubs check out the FAQ article I attached.

Once you determine what bolt pattern you need you can email me back and I will help you pick out the correct wheel and tire.

expert reply by: Jameson C