780/50-28.5 Forwarder Tires
The 780/50-28.5 is the widest, heaviest-duty flotation forestry tire in the forwarder line — about 60 inches tall and 30.7 inches wide on a 28.5-inch rim, built for the heaviest forwarders and harvesters. The 780 is the section width in millimetres, 50 is the aspect ratio, and 28.5 is the rim diameter. Match the size, ply rating, and rim of the tire you are replacing, and call (207) 370-8473 — we confirm fitment for your machine before you buy and quote current pricing by phone. There are no prices on this page.
780/50-28.5 Specs
Size: 780/50-28.5
Typical overall diameter: ~60 in (1,525 mm)
Typical section width: ~30.7 in (780 mm)
Common rim: AG26.00 (26 in)
Common ply ratings: 24 ply (varies by brand/model; Ascenso FFB 841 is 26 ply)
Construction: Bias forestry / LS-2 tread typical; commonly run with tracks
Dimensions are typical and vary by brand and model — call (207) 370-8473 for the exact specs of the tire on the ground.
Brands and Models We Carry in 780/50-28.5
We stock and source 780/50-28.5 forwarder tires in these brands and models — plus used and take-off sets when they come in. Availability changes weekly: call (207) 370-8473 for what is on the ground today.
Alliance
Alliance Forestar III (643 and 644) — 780/50-28.5
Alliance 643 Forestar III — 780/50-28.5
Offered in this size in tube type and tubeless.
Track note: the 643 Forestar III is seamlessly compatible with Olofsfors bogie tracks, and the Forestar III line is approved for use with major track brands including Clarks and Pewag.
The Alliance 644 Forestar III is also offered in 780/50-28.5 (tube type and tubeless).
Trelleborg
Trelleborg Twin Forestry T480 — 780/50-28.5
Trelleborg Twin Forestry T480 — 780/50-28.5
Load/speed: 182A8 (24 ply) · 182A2/190A2 in forestry service · LS-2
Overall diameter: ~60 in (1,525 mm) · Section width: 780 mm (819 mm max in service)
Rim: AG26.00 · Steel-belted
Nokian
Nokian Forest King F2 — 780/50-28.5
Nokian Forest King F2 — 780/50-28.5
Ply rating: 24 ply · Load/speed: 182A8/190A2 · Tube type
Overall diameter: ~60 in (1,525 mm) · Section width: 780 mm
Rim: AG26.00 · Max pressure: 87 psi (6 bar) · Tread depth: 35 mm
Built for the heaviest forest machines — Nokian introduced this size for machines over 20 tonnes, with track support at every point.
Ascenso
Ascenso FFB 841 — 780/50-28.5
Ascenso FFB 841 — 780/50-28.5
Ply rating: 26 ply · Load/speed: 185A8/193A2 · Tubeless · LS-2, steel-belted
Overall diameter: ~59.6 in (1,515 mm) · Section width: 783 mm
Recommended rim: 24.00 (per Ascenso's spec for this model — most other 780/50-28.5 tires use AG26.00, so confirm the wheel before ordering) · Inflation pressure: 6.5 bar · Tread depth: 40 mm
What Machines Run 780/50-28.5?
The heaviest forwarders and harvesters — the big 6- and 8-wheel machines from makers like Ponsse, John Deere, Komatsu Forest and Logset that need maximum flotation and load capacity. This size is commonly run with bogie tracks for flotation and traction on soft ground. If your machine runs 780/50-28.5 now, stay with matched sets so all positions roll out together. Tell us your machine model when you call and we will confirm.
Tracks, Tubes & Wheels for 780/50-28.5
We help size bogie tracks, tubes and custom-built wheels for 28.5-inch rims to match this tire. Track fit depends on the exact tire model — the Alliance Forestar III line is approved for use with major track brands — so call (207) 370-8473 and we will match the track, tube and wheel to the tire you actually run.
780/50-28.5 Forwarder Tire Questions
What size is a 780/50-28.5 tire?
About 60 inches in overall diameter and 30.7 inches (780 mm) in section width, mounted on a 28.5-inch rim (common rim AG26.00). Exact dimensions vary by brand and model.
What machines use 780/50-28.5 tires?
The heaviest forwarders and harvesters, including big 6- and 8-wheel forwarders. Confirm fitment for your exact machine by calling (207) 370-8473.
How much does a 780/50-28.5 forwarder tire cost?
Pricing changes with brand, ply, and freight — we quote current, delivered pricing by phone. Call (207) 370-8473.
Do you ship 780/50-28.5 tires nationwide?
Yes. One call gets you a delivered quote — we ship from regional warehouses across the country, the one closest to you, so freight costs less and your tires land faster. Freight arranged for you; liftgate available where you need it.
Call (207) 370-8473 — tell us your machine and what is on it now; we will confirm fitment and quote you delivered.
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Prices and availability are subject to change without notice
All sales are final. No refunds, no returns
Back Bay Capital Corporation DBA SkidderTires · 338 N. Main St, Brewer, ME 04412 · (207) 370-8473 · https://skiddertires.org