---
product_id: 596331496
title: "Roundrule Xtra ST235/80R16 129/125M All Season G (14 Ply) All Steel Tire"
brand: "roundrule"
price: "$1259.84"
currency: USD
in_stock: true
reviews_count: 8
category: "Roundrule"
url: https://www.desertcart.us/products/596331496-roundrule-xtra-st235-80r16-129-125m-all-season-g-14
store_origin: US
region: United States of America
---

# Supports up to 4079 lbs load 14-ply heavy-duty strength All-season traction grip Roundrule Xtra ST235/80R16 129/125M All Season G (14 Ply) All Steel Tire

**Brand:** roundrule
**Price:** $1259.84
**Availability:** ✅ In Stock

## Summary

> 🚛 Tough on the road, smooth on the haul — your trailer’s new best friend.

## Quick Answers

- **What is this?** Roundrule Xtra ST235/80R16 129/125M All Season G (14 Ply) All Steel Tire by roundrule
- **How much does it cost?** $1259.84 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/596331496-roundrule-xtra-st235-80r16-129-125m-all-season-g-14)

## Best For

- roundrule enthusiasts

## Why This Product

- Trusted roundrule brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Heavy Load Champion:** Supports up to 4079 lbs per tire—perfect for demanding trailer hauls without compromise.
- • **Smooth Highway Ride:** Speed rated M (81 mph) for stable, reliable towing on highways and beyond.
- • **Year-Round Traction:** Engineered for all-season performance, ensuring safety rain or shine, snow or heat.
- • **Sleek Black Sidewall:** Minimalist black sidewall design that blends rugged utility with professional style.
- • **Unmatched Durability:** 14-ply all-steel radial construction built to conquer every mile with confidence.

## Overview

The Roundrule Xtra ST235/80R16 is a 14-ply rated, all-steel radial trailer tire designed for all-season highway use. With a load index of 129/125, it supports up to 4079 lbs per tire and is speed rated M for up to 81 mph. Its durable construction and symmetrical tread provide reliable traction and stability, making it an ideal choice for professional-grade trailer hauling.

## Description

Buy Roundrule Xtra ST235/80R16 129/125M All Season G (14 Ply) All Steel Tire | Trailer Highway All Season Traction 129/125M Rated G (14 Ply) Radial Construction Black Sidewall Tire: Trailer - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: St225 75 15 - These are great tires. I have 400 miles on them. So far. I have £8000 on the24ft trailer, and it took a lot of this sway out of the trailer fast shipping is exactly what I was looking for.
Review: Worth Buying - We have purchased these more than once. They are a good option for a reasonable price.

## Features

- Product Overview: The Roundrule Xtra is a 235/80R16 129/125M G 14 Ply Rated Highway All Steel Tire Manufactured For Trailers
- Driving Conditions: All Season Traction
- Styling and Construction: One Black Sidewall, Radial Construction, 16 Inch Tire
- Load Index and Speed Rating: Load Index 129/125 Supports up to 4079/3638 lbs Per Tire and Speed Rating M Certified to 81 mph
- Additional Note: Tire Only - Rim/Wheel Not Included

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CP6626PW |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #25,405 in Automotive ( See Top 100 in Automotive ) #21 in Trailer Tires |
| Brand | Roundrule |
| Brand Name | Roundrule |
| Construction Type | Radial |
| Customer Reviews | 4.7 out of 5 stars 161 Reviews |
| Included Components | Tire Only |
| Item Diameter | 30.8 inches |
| Item Dimensions | 29 x 29 x 8 inches |
| Item Highlight | Trailer Highway All Season Traction 129/125M Rated G (14 Ply) Radial Construction Black Sidewall Tire |
| Item Weight | 56 pounds |
| Load Capacity | 4079 pounds |
| Load Index | 129 |
| Load Range | G |
| Manufacturer | Roundrule |
| Manufacturer Part Number | P70012-R |
| Maximum Pressure | 110 psi |
| Model Number | P70012-R |
| Number of Packs | 1 |
| Ply | 14-Ply |
| Rim Size | 16 inches |
| Rim Width | 6.5 inches |
| Seasons | Year Round |
| Section Width | 23.5 centimeters |
| Size | 235/80R16 (129/125M) |
| Speed Rating | M |
| Tire Aspect Ratio | 8 centimeters |
| Tire Diameter | 30.8 inches |
| Tread Depth | 11 thirty_seconds_inches |
| Tread Type | Symmetrical |
| UPC | 840156487016 |
| Unit Count | 1 Count |
| Vehicle Tire ISO Metric Size Description | 235/80R16 |

## Product Details

- **Brand:** Roundrule
- **Load Capacity:** 4079 Pounds
- **Load Index:** 129
- **Rim Size:** 16 Inches
- **Section Width:** 235 Millimeters
- **Size:** 235/80R16
- **Speed Rating:** M
- **Tire Aspect Ratio:** 80 Millimeters
- **Tread Depth:** 8.73 Millimeters
- **Tread Type:** Symmetrical

## Images

![Roundrule Xtra ST235/80R16 129/125M All Season G (14 Ply) All Steel Tire - Image 1](https://m.media-amazon.com/images/I/714C27iVX1L.jpg)
![Roundrule Xtra ST235/80R16 129/125M All Season G (14 Ply) All Steel Tire - Image 2](https://m.media-amazon.com/images/I/710tZpttXkL.jpg)
![Roundrule Xtra ST235/80R16 129/125M All Season G (14 Ply) All Steel Tire - Image 3](https://m.media-amazon.com/images/I/81bC9+G2YQL.jpg)
![Roundrule Xtra ST235/80R16 129/125M All Season G (14 Ply) All Steel Tire - Image 4](https://m.media-amazon.com/images/I/71KkA-N0FnL.jpg)
![Roundrule Xtra ST235/80R16 129/125M All Season G (14 Ply) All Steel Tire - Image 5](https://m.media-amazon.com/images/I/71JbzLqyPaL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ St225 75 15
*by D***E on September 12, 2026*

These are great tires. I have 400 miles on them. So far. I have £8000 on the24ft trailer, and it took a lot of this sway out of the trailer fast shipping is exactly what I was looking for.

### ⭐⭐⭐⭐⭐ Worth Buying
*by T***. on June 7, 2026*

We have purchased these more than once. They are a good option for a reasonable price.

### ⭐⭐⭐⭐⭐ 16 in trailer tires
*by A***R on September 17, 2026*

Seem heavy duty and holding up so far.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-07*