How to Identify Spindle on 1987 Trailer Switching to Trailer Wheels
Updated 12/22/2025 | Published 10/18/2024
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Question:
I have a 1987 trailer. It has car rims. How can I tell if I can convert to trailer rims either 5x4.5 or 5x5? Will my bearings tell what spindle I have?
asked by: Ed G
Expert Reply:
Hi Ed; unless you have some kind of hub that won't allow trailer wheels all you need to do is identify the bolt pattern. I attached a help article below which explains how to measure and find your bolt pattern. If you're swapping out the hub you can use the bearings to identify the spindle and which hub fits. The bearings will either have part numbers stamped in them or you can measure the inner diameter with a digital caliper # PTW80157.
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Product Page this Question was Asked From
Square #84 Spindle for 3,500-lb Trailer Axles - 1-1/2" Wide
- Trailer Spindles
- Standard Spindle
- Without Flange
- L68149
- 1-1/2 Inch Diameter
- Square
- For 3500 lb Axle
- TruRyde
more information >
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Robin H.
12/22/2025
Hey Ed, how did things go with measuring your bolt pattern and checking the bearings on your trailer? Once you figured that out, were you able to match the right hub and rim setup? Your update could make it easier for others working on older trailers like yours.