Looking For Replacement For 578-15ST Trailer Tires
Updated 02/17/2026 | Published 06/22/2024
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Question:
I needed a replacement for a trailer tire 578-15ST
asked by: Loretta H
Expert Reply:
Hello Loretta, thanks for reaching out. I have not heard of 578-15ST tires in quite a long time. This is a very old tire size which is no longer made. The modern equivalent of this size is a ST205/75-15. For this I recommend the Provider ST225/75R15 Trailer Tire # TTWTRTM2257515D. This is a Radial load range D tire meaning it is 8 ply rated and had a max load of 2,540 lbs at 65 PSI. The provider tires are very solid for the price. Definitely a step up in quality from a lot of other options in the same price range.
Product Page this Question was Asked From
Provider ST205/75R15 Radial Trailer Tire - Load Range C
- Trailer Tires and Wheels
- Tire Only
- Radial Tire
- Load Range C
- 205/75-15
- 15 Inch
- M - 81 mph
- Taskmaster
more information >
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Jesse M.
2/17/2026
Hey Loretta, how did the Provider ST225/75R15 tire work out as a replacement for your old 578-15ST? It’d be great to know if the fit and performance met your needs. Your update could make it easier for others looking to replace that older tire size.