Are The Westlake ST205/75R15 Radial Trailer Tires Super ST Or ST100?

Updated 04/22/2026 | Published 04/14/2026

Question:

Are your Westlake ST205 75/R15 tires “Super ST” or “ST100”, and can you explain the difference between the two types in terms of quality and construction?

asked by: John K

Expert Reply:

Hey John, thanks for reaching out. The Westlake # LHWL300 tire you’re looking at isn’t really labeled as “Super ST” or “ST100.” It’s more of their standard OEM trailer tire that a lot of RVs come with from the factory. Construction-wise, it’s what you’d expect for a modern ST tire, steel belts, polyester plies, and a nylon overlay to help with strength and heat.

Where the ST100 vs “Super ST” conversation comes in is more about product lines/marketing tiers, not completely different tire categories. The ST100 is more of a consumer retail line you’ll see sold individually, with features like steel belts and nylon caps for stability and durability. “Super ST” is usually just a branding term some sellers use to describe upgraded or higher load/speed-rated ST tires, not an official construction standard from Westlake.

The # LHWL300 tire is right in line with what most RVs come with from the factory. It’s a standard-duty ST radial, not a lower-tier tire, but also not a premium upgrade like a Goodyear Endurance or similar. So, the difference isn’t really “good vs bad,” it’s more OEM standard vs marketed product lines, and the construction between them is extremely similar.

What do you usually haul with this trailer? Camp gear, boats, or work stuff?

expert reply by: Jesse M

Westlake ST205/75R15 Radial Trailer Tire - Load Range D
(click to enlarge)

John K.

4/20/2026

Thanks for your reply. I have a 32 foot Grand Design Imagine RV, primarily used for dry camping but hoping to do some cross country. The Super ST’s it came with (sidewall printing) are over 8 years old but just the fact they’ve lasted that long is incentive to replace them with the same tire. I see tires advertised as ST100 for sale for about $50 less than the Westlakes on your website, prompting the question of quality/construction and which type etrailer is selling. That’s a substantial difference if they’re essentially the same tire but I’m more concerned about reliability if there’s a difference.

Jesse M.

4/20/2026

@JohnK Thats a solid lifespan for a tire. If you got 8 years out of your current set, that tells you everything you need to know about that design. The main difference you’re seeing between the ST100 and what your RV came with really comes down to how they’re positioned and sold, not a big jump in construction. You’re not looking at a “cheap tire vs better tire” situation here. It’s more OEM line vs retail-branded line, and the performance is very similar. The Westlakes we carry are the same style of tire most RV manufacturers trust from the factory, and they hold up well when maintained properly. For what you’re doing, especially with some cross-country trips, you’d be perfectly fine staying with the Westlakes and not overthinking the ST100 vs “Super ST” label.

Greg

4/21/2026

@JohnK I have Westlakes on my 2018 Imagine 2800bh they are great tires and last a lone time the max speed rating is the main thing you should be looking for a lot of cheaper tires are rated for 55mph max