Determining Bolt Pattern on Vintage Trailer From the 1960's for New Wheels and Tires

Updated 05/23/2020 | Published 05/22/2020

Question:

I have a 5 bolt pattern on my vintage camper rim. It’s a 175/80D13 tire but the bolt measurement is only 4 inches from bolt 5 to bolt 4? Every wheel I’m finding online has a 4.5 measurement with 5 bolt patterns. I want a new rim and tire assembly. Someone help me please !! Does that rim exist anymore?

asked by: Joe B

Expert Reply:

Even on a trailer from the 1960's I've never heard of a 5 on 4 bolt pattern. Where exactly are you measuring the 4 inches? With a 5 lug pattern you need to measure from the center of one bolt hole to the outside edge of one of the furthest bolt holes from that one. Just like is shown in the picture. I've also attached a help article on measuring your bolt pattern and a template you can use if you'd like.

If you find out you do indeed have the common 5 on 4-1/2 pattern there's a lot of options for you like the Keda Loadstar # AM3S050. I've linked our wheel and tire assemblies to this page.

expert reply by: Charles S