Head to head

Tracked versus wheeled feller buncher

Stability and flotation, or travel speed between trees?

9 criteria compared

Both configurations cut and bunch. The difference is what dominates the cycle: time spent travelling between trees, or the ability to stay stable and afloat where the ground is difficult.

In regular plantation blocks on flat ground, travel is a large share of the cycle. On broken or steep ground, stability is the constraint that decides whether the machine works at all.

Framing

Why this comparison recurs

Both configurations cut and bunch. What separates them is which part of the cycle dominates: time spent travelling between trees, or the ability to stay stable and afloat where the ground is difficult.

In regular plantation blocks on workable ground, travel is a substantial share of the cycle and wheels convert that directly into stems per hour. On broken, steep or soft ground, stability and flotation decide whether the machine works at all — and a machine that cannot work the coupe has no production rate.

The honest answer for many operations is that it depends on the proportion of the programme in each condition, which is a scheduling question as much as a machine one.

What each is for

These are not two points on one scale

Most of the confusion in this comparison comes from reading them as better and worse versions of the same thing. They are built for different work.

Tracks buy access

Weight spread over a large contact area, low ground pressure, and the stability to hold grade with a head loaded. Everything tracks provide is about working ground a wheeled machine cannot — and everything they cost, in transport, travel speed and undercarriage consumption, is paid on the easy ground too.

Best at

Steep, broken or soft terrain
Sustained work on one site with little travel
Compaction-sensitive ground with tight requirements
Heavy timber where stability under a large head governs

Wheels buy mobility

Faster between work points, cheaper to move, simpler and less expensive to maintain. On firm, even ground the production difference narrows considerably, and the saving on transport and undercarriage is collected on every job rather than on the difficult minority.

Best at

Firm, even plantation ground
Scattered coupes with frequent machine moves
Operations where travel is a real share of the day
Regions where wheeled configurations resell readily

Side by side

The comparison

Criterion	Tracked feller buncher	Wheeled feller buncher
Difficult and broken terrain	Excellent	Limited
Steep ground	Suited	Limited
Ground pressure	Lower	Higher
Travel speed between trees	Slower	Fast
Stability under a large head	High	Moderate
Heavy timber	Suited	Limited
Regular plantation blocks	Capable	Excellent
Undercarriage cost	Significant	Tyres instead
Transport	Heavier, more complex	Simpler

The decision

Which one, and when

Choose tracked feller buncher when

Terrain is broken, steep or soft
Timber is heavy and the head is large
Soil bearing capacity limits what a wheeled machine can do in the wet
Stability at reach is the binding constraint

More detail →

Choose wheeled feller buncher when

Plantation blocks are regular and the ground is flat
Travel between trees is a large share of the cycle time
High-production clearfell where machine movement drives throughput
Transport between blocks is frequent

More detail →

The decision rule

Work out what dominates your cycle. If it is travel, wheels earn the difference. If it is stability, flotation or slope, tracks do — and no amount of engine power substitutes for either.

The money

How the two differ on cost, specifically

Capability comparisons are easy to find. This is where the commercial difference actually sits.

Factor	Tracked feller buncher	Wheeled feller buncher
Dominant wear item	Undercarriage	Tyres
Travel speed between stems	Slower	Fast
Ground pressure	Lower	Higher
Wet-weather operating days	More	Fewer
Transport complexity	Heavier, often permitted	Simpler
Stability under a large head	High	Moderate

What would change the answer

The variables that move this decision

Read across the row your own situation matches. Where most rows point the same way, the decision is straightforward; where they split, the comparison is genuinely close and the economics below should settle it.

Variable	Points to tracked feller buncher	Points to wheeled feller buncher
Proportion of genuinely difficult ground	Low — mostly firm and even	High — steep, broken or soft
Machine moves per year	Many, scattered coupes	Few, sustained on one site
Travel distance within the coupe	Substantial	Short; the machine works and stays
Ground pressure constraints	Relaxed	Tight — soft or compaction-sensitive
Regional resale market	Favours wheeled configurations	Favours tracked configurations

Three situations

What we would actually recommend

Not a balanced summary — a recommendation for each case, with the reasoning.

Regular plantation blocks, workable ground, high-production clearfell

Choose: Wheeled

Travel between trees dominates the cycle, and speed converts directly into stems per hour. Transport between blocks is also simpler and cheaper.

Broken or steep terrain, heavy timber, soft soils

Choose: Tracked

Stability under a large head and flotation in soft ground are the binding constraints. On this ground a wheeled machine is either slower or unable to work at all.

A mixed programme across both conditions

Choose: Tracked, unless the easy ground clearly dominates

A tracked machine can work the difficult ground slowly; a wheeled machine may not be able to work it at all. The asymmetry favours the more capable configuration when the programme is genuinely mixed.

Reading the sheet

Published figures that mislead on this particular choice

Each of these is accurate. Each of them answers a different question from the one a buyer is asking when they compare these two.

What is published	What it actually tells you
Published slope rating	Stated for defined conditions — firm, dry, uniform ground, usually bare. Ground condition, head mass at reach, direction of travel and dynamic loading all reduce the working limit, and the site assessment is what governs.
Ground pressure figures	Calculated on a nominal contact area. Real flotation depends on track or tyre specification, load distribution at reach and the ground's actual bearing capacity on the day.
Travel speed	Matters in proportion to how much of the day is spent travelling. On dense coupes with short moves it is close to irrelevant; on scattered work it is a productivity specification.
Operating weight	Reads as a durability proxy and is also a transport cost, a ground pressure input and a mobilisation constraint. Heavier is better and worse in the same specification.

What goes wrong

Mistakes specific to this decision

How to settle it

The order to work through, for your own case

Each step narrows what the next has to establish. Worked in order, most buyers find the decision resolves before the last one.

Characterise the ground across the whole programme

Not the worst coupe and not the best. The proportion of genuinely difficult ground is what decides whether tracked capability is carried usefully or carried everywhere for occasional use.

Count machine moves per year

Tracked machines cost more to move and travel more slowly between work points. On scattered coupes, mobilisation can consume more days than breakdowns.

Include undercarriage in the cost model

It is among the largest single maintenance costs on a tracked machine, it is driven by travel as much as by work, and it is measurable rather than a matter of judgement.

Check the resale market you would be selling into

Configuration affects the buyer pool. A machine specified for terrain your region does not have is harder to sell there, and depreciation is the largest number in the model.

Often overlooked

The option that is not on this page

Wheeled, plus assistance where the ground demands it

The comparison assumes one machine has to cover the whole programme. Where only a minority of coupes are genuinely difficult, a wheeled machine with winch assistance on the ground that needs it can cover the range at lower transport and undercarriage cost than a tracked machine carried everywhere for occasional use. It adds a second asset and a setup step, so it earns where the difficult proportion is real but small.

Common questions

Frequently asked questions

Which is cheaper to run?

It depends on the ground. Wheeled machines avoid undercarriage cost but consume tyres and lose operating days in wet conditions. Tracked machines carry undercarriage cost but work more of the year on soft ground. Model the total against your actual conditions rather than comparing wear items in isolation.

Can a wheeled feller buncher work on slopes?

Within limits that are considerably tighter than a tracked machine's, and the limits are safety-critical rather than merely productivity ones. On genuinely steep ground, tracked machines and in some cases winch assistance are the appropriate answer.

Does configuration affect transport cost?

Yes. A tracked machine in the 36-tonne class with a head fitted frequently exceeds standard dimensions, adding permit and escort cost on every relocation. For an operation moving frequently between small blocks, that recurring cost can outweigh the on-site productivity difference.

Detail