305 M/T
/70R19.5
Maximum bite for the harshest conditions. Built for the trucks that go where others stop.
The Founders 305 M/T is the full-size mud terrain in the lineup, a tire built for trucks that need maximum traction on terrain that would stop everything else. This is the option for buyers who are building serious rigs, running severe-duty applications, or simply refuse to be held back by the terrain.
Running a larger footprint means more tread on the ground, more self-cleaning in the worst conditions, and more sidewall to absorb whatever the trail or the job site throws at it. This is the tire for buyers who've already committed to the full build.
Built for the full build.
The 305 M/T pairs with our Super Single wheel kits and lift packages. If you're going this route, we can help spec the whole setup, contact us and we'll walk you through it.
Contact to Order
The 305 M/T is sold direct. Pricing depends on fitment, quantity, and whether you're pairing with wheels or a kit. Reach out and we'll build the right quote for your truck.
305 M/T Specs
The 305 M/T is designed around trucks that are already running larger wheels and lift setups. Specifications vary by exact configuration, contact us for the full technical sheet for your application.
The 305 M/T pairs with our Super Single wheel kits for a complete severe-duty tire system.
Built to keep clawing when the truck is deep in it.
The 305 M/T is not a scaled-up version of the smaller tires. The larger footprint, heavier casing, and more aggressive tread package are built for trucks committed to maximum traction and severe-duty off-road use.
Deep Shoulder Lugs
The outer blocks keep the tire biting when the truck leans into ruts, soft shoulders, and broken surfaces.
Main Center Tread Blocks
The center zone carries the load, supports braking and acceleration, and keeps the truck more stable than a wild open tread would.
Transition Blocks
These distribute force across the wider footprint so the tire moves from road surface to deep terrain without falling apart in feel.
Stone Ejectors & Siping
Even on an aggressive mud tire, the small details matter. These clear debris and keep wet or winter grip more usable.
Tie Bars & Tread Stabilizers
Reinforce the pattern so the 305 stays controlled on the road and resists unnecessary tread squirm or uneven wear.
In the Field
Real Founders Tires Reviews
What Customers Are Saying
This truck went coast-to-coast-to-coast all summer on these tires with no issues. Personally, I drove over 20 hours highway in one trip on these tires and they performed very well.
Robert Pike
Fire Truck Builder · Canada
Fire ServiceOur truck weighs around that 18,000 lb mark. We have run over stumps, logs, up very steep terrain in the woods, deep mud, deep snow and have been stuck substantially less. I would say these are definitely an 8–9 compared to what we were using before.
Mike Wolbeck
Central Specialties
FleetThey converted our grass truck from an ineffective truck that got stuck whenever we ventured into a wet location, to a very effective grass truck that has not gotten stuck yet. It throws a lot of mud but gets you where you need to go.
Rex Johnson
Assistant Chief · Bippus Community Volunteer Fire Association
Fire ServiceSeen in the field
Fire service · Fleet · Overland, real trucks, real use.
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Fire service, fleet, or off-road, we'll build the right quote for your application.