Hi-Run SU03 20.5x8.00-10 10PR Heavy-Duty Boat Trailer Tire and 5 on 4.5 Wheel Assembly
Hi-Run SU03 20.5x8.00-10 10PR Heavy-Duty Boat Trailer Tire and 5 on 4.5 Wheel Assembly
The Hi-Run SU03 20.5x8.00-10 is a heavy-duty boat trailer tire pre-mounted on a durable 10x6 white steel rim (5 lug on 4.5" pattern). Engineered for easy boat launching, this low-profile, ready-to-bolt assembly features a rigid 10-ply Load Range E construction supporting up to 1,535 lbs at 90 psi. The aggressive block tread design delivers exceptional grip on slippery boat ramps and wet surfaces. DOT-approved for street-legal compliance, it ensures dependable stability and heavy-load capacity for your local marine transport needs. READY-TO-BOLT BOAT ASSEMBLY - Comes factory-mounted and balanced on a durable 10x6 white steel wheel (5 lug on 4.5" pattern). Quick, tool-free replacement for your marine trailer. LOAD RANGE E (10 PLY) - Reinforced 10-ply tubeless bias construction carries a massive 1,535 lbs at 90 psi. Rigid sidewalls prevent tire squatting under heavy fiberglass boat hulls. BOAT RAMP GRIP TREAD - Features an aggressive block pattern with an 8.8/32" depth. Delivers maximum traction on slippery, wet boat ramps and gravel shorelines. LOW-PROFILE DESIGN - The compact 10-inch wheel setup lowers your trailer's center of gravity, making launching and loading your boat easier and safer at the marina. DOT-APPROVED MARINE SAFETY - Fully DOT-approved for reliable, street-legal compliance. Engineered specifically for dependable local hauling between storage and the water.
Specifications
- Tire size: 20.5/8-10
- Tire type: Trailer Tires
- Tire width: 8.1 in
- Tire diameter: 10 in
- Tire aspect ratio: 80
- Tire speed rating: T
- Tire load index: 10
- Tire season: All-Season
- Brand: Hi-Run
- Construction type: Non-Radial
- Maximum inflation pressure: 50 psi
- Tread depth: 8.8/32
Size chart
| Size | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|
| Tee — chest width (in) | 18 | 20 | 22 | 24 | 26 | 28 |
| Tee — body length (in) | 28 | 29 | 30 | 31 | 32 | 33 |
| Fits chest (in) | 34–36 | 38–40 | 42–44 | 46–48 | 50–52 | 54–56 |
Shipping, returns & fit
Shipping is free on U.S. orders of $75 or more; orders under $75 ship for a flat $6.95. We ship to U.S. addresses only.
Every piece is printed to order, so allow 1–3 business days for production and packing. Once shipped, delivery normally takes another 3–8 business days, with a tracking link emailed to you. Full details in our Shipping Policy.
You have 30 days from delivery to return any unworn, unwashed item with tags attached. Return postage is paid by the buyer, unless your item arrived damaged, wrong, or never arrived — in those cases we replace it or refund you in full and cover the postage. No restocking fees.
Approved refunds go back to your original payment method within 5–10 business days. See the full Refund Policy.
Unisex relaxed fit, sizes S to 3XL. True to size for a relaxed look; go one size up for the oversized, boxy 90s look.
Heavyweight 100% cotton, garment dyed and preshrunk. Wash cold inside out, tumble dry low. Every blank is dyed in batches, so the exact shade of wash varies slightly piece to piece — that is the vintage look, not a defect.
Email support@70srockshop.com or use our contact form. A real person in Union, Ohio reads every message, Mon–Fri, 9 AM – 5 PM ET — usually answered within one business day.