$999 Delivered
*Delivered price is to lower 48 only
The Most CAPABLE Offroad Super Single Tire. Period.
The Founders M/T 305/70R19.5 is the ultimate step up from the 245 — wider, taller, and made to turn heavy-duty trucks into true off-road machines. With its bold footprint and higher load capacity, it’s perfectly suited for super single conversions on F-450/550, RAM 4500/5500, GM, and Isuzu platforms. The added width delivers better flotation and stability, while the increased diameter boosts ground clearance and stance. Backed by the proven Founders M/T tread — engineered for digging, self-cleaning, and winter-certified Three-Peak Mountain Snowflake traction — the 305 is built to handle anything from deep mud to snow-packed roads without compromise.
Tire Tread Block Regions
Green — Shoulder Block
Cornering stability, resists lateral forces, staggered edges to cut noise.
Red — Center Block
Primary contact patch for straight-line stability, braking, and acceleration traction.
Blue — Intermediate/Transition Block
Bridges forces between center and shoulders; balances handling and comfort, reduces harmonics.
Purple — Edge/Shoulder Lug
Angled outer lugs bite into loose terrain; open voids self-clean and add grip in ruts or snow.
CYAN — STONE-EJECTOR / SIPING
Small tie bars and ejectors clear rocks, add wet-grip bite, and stabilize the tread so it wears evenly without raising noise.
FEATURES
Founders M/T 245s are designed to fit directly up to a factory wheel & suspension setup for heavy-duty pickups/work trucks. Compared to the factory size of 225/70R19.5, the 245/70R19.5s are taller, wider, and have a higher weight rating - maximizing offroad capability without having to extensively modify your truck.
Specific Models:
- Ford F450/550, 2005+
- Dodge 4500/5500, 2005+
- GM 4500/5500/6500
- Any truck whose stock tire size is 225/70R19.5 (and/or fits a 245/70R19.5)
Aggressive Tread When You Need It, Highway Comfort When You Don’t
The outer lugs have staggered shoulders to dig in when it’s wet. The side lugs alternate in height and are long, giving you 70% more traction in the mud. On the road, the center two rows are engineered for stability at speed and to give the tires a longer wear life.
Ice Stud & Tire Chain Ready
If you live up North, these tires are ice stud ready and will keep you moving this winter. Get your ice studs installed at one of our trusted dealers. Ice Stud Size: #15
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FAQ
No, in order to fit Founders M/T onto your truck, you will need to install a lift kit as well as trim your fenders. We offer Tuff Country® lift kits as an option for each set of tires we sell, for Ford® trucks, meaning the lift kit and tires will ship together as a complete super single conversion kit. If you have a Dodge® or other make truck, you’ll have to purchase your own 2.5” lift kit separately.
The life of your tires will depend on many factors, including your vehicle weight, percentage of driving on/off road, and your style of driving. They were engineered to provide the best combination of longevity, traction, and durability.
- Added chassis/suspension clearance over ground obstacles.
- Tread pattern designed for superior traction in soft or muddy ground, plus improved wet and snowy road grip.
- Extra width provides flotation in sandy or soft conditions.
- Reinforced sidewalls resist abrasion and punctures.
- Single tires eliminate debris jamming between duals and prevent blowouts.
Absolutely. You’ll need basic tools: wrenches, a floor jack, and some anti-rust lube for stubborn parts. No welding required. A motivated DIYer with a helper can complete the job in a weekend. Order your Founders tires pre-mounted on powder-coated wheels to save time, or have them installed by one of our certified dealers or your local mechanic.
No. Neither the tires nor the lift kit affect your manufacturer warranty in any way.
Yes. The 305/70R19.5 was engineered for super single conversions on F-450/550, RAM 4500/5500, GM, and Isuzu chassis. Pair them with proper 19.5″ wheels and the correct offset for your setup.
The 305 is wider and taller, giving more ground clearance, better flotation, and a more aggressive stance while maintaining the same self-cleaning M/T tread that defines Founders performance.
The Founders 305 M/T is engineered for severe-snow traction and carries the Three-Peak Mountain Snowflake (3PMSF) rating where molded on the sidewall. Always verify the symbol on your tire to confirm certification.
Yes, with care. Clearance depends on your wheel offset, fender liner, and brake package. Test-fit chains on a lifted, secure vehicle and check inner/outer clearance through full steering travel before use.