TLB Tyre Pressure: The Complete South African Guide for Operators

Most people only learn what their TLB tyres should be running at the day one blows on site. By then it’s already cost them a morning. Soft tyres cook themselves from the inside and split. Hard ones hammer the centre of the tread flat and let go of the ground every time the loader’s working a slope. Either way you’re buying rubber sooner than you needed to, and burning more diesel getting there. So here’s what we actually run, a chart to work off, and the kPa-to-psi sums that catch nearly everyone out.

These numbers aren’t off a chart someone scraped. We fit TLB, construction and industrial tyres all over South Africa, and this is what comes off the machines we put our hands on.

What is the correct TLB tyre pressure?

Front and rear don’t match, and that catches people out. On most machines you’re looking at 35 to 45 psi on the front steers and a fair bit less on the rears, somewhere around 25 to 35. Call the whole spread 170 to 310 kPa if you work in metric. But the sidewall and the manual override anything I tell you here, because load rating and size move the goalposts.

Think about how a TLB sits. Bucket out front, backhoe off the back, and the balance shifting the whole time you’re digging and slewing and trundling between holes. Two axles, two jobs, two pressures. Any operator who’s been at it a while checks both before the engine’s warm.

What is the TLB tyre pressure chart for South Africa?

The chart below is the fitments we see most on local sites. Start here, then check it against your own sidewall and whatever the machine’s doing that day. It’s a guide, not gospel.

Note: figures are typical ranges. Your exact machine and tyre brand may differ.

Stuck on size or load index? Tell us the machine and we’ll match the tyre. Request a quote and the fitment and pressure come back with it.

How do you check TLB tyre pressure correctly?

Cold. First thing, before the machine’s moved. That’s the only reading worth trusting, and here’s why: rubber heats up as it works and the pressure rises right along with it, so check it at smoko and the gauge lies to you. Looks fine, reads high, and you’ve quietly been running soft all week.

The routine:

• Morning, cold, before a wheel turns.
• Use a gauge you trust. The pencil ones wander and you’ll never know by how much.
• Front and rear separately. They’re not on the same number.
• You’re down there anyway, so eyeball the rubber for cuts, bulges, wear that’s gone lopsided.
• Set it, then read it again.

Couple of minutes. That’s it. The blokes who skip it pay for it later in tyres and a machine parked when it should be earning.

Is there a TLB tyre pressure calculator?

Not really, no. Anyone selling you a magic number is guessing, because the right pressure leans on tyre size, load index, axle weight and the state of the ground. What does work is dull but reliable: take the manufacturer’s figure for your tyre size as the baseline, then move it inside the safe band to suit the load and the surface.

Heavy load, hard ground, more air. Soft ground, traction work, back it off a little. If you’d sooner have it pinned down properly, give us the machine and what it hauls and we’ll do the sums.

What does TLB tyre pressure look like in kPa and psi?

We use both here, sometimes stamped on the same tyre, and that’s where the mistakes creep in. Quick maths: kPa over 6.9 gives psi, psi times 6.9 gets you back. The numbers you’ll actually meet on TLB and truck tyres are below.

What is 240 tyre pressure in psi?

Call it 35 psi. That’s where 240 kPa lands, and it’s a number you’ll see often on TLB fronts and lighter commercial tyres. Manual says 240 kPa, gauge says 35, same thing.

What is the correct truck tyre pressure in psi?

Anywhere from about 30 psi on a light bakkie to 100 or 120 on a heavy hauler running full. It tracks the load rating, plain and simple. Load is what decides it, not the tyre size on its own, which is why a 3 tonne and an 8 tonne on the same rubber still end up at different pressures.

Here’s how it breaks down across the classes most people round here are running.

Always confirm against the load and inflation table on the tyre and the vehicle’s plate.

What is the right 3 tonne truck tyre pressure?

50 to 65 psi, and the load tells you where in that range to sit. Loaded, run it up near 65 to keep the sidewalls happy. Empty, drop it a touch. The ride improves and you stop wearing a stripe down the middle of the tread.

Why does correct TLB and truck tyre pressure matter?

More than people reckon. Safety for one. Then how long the tyre lasts, what the machine drinks, how it sits under load. Run soft and heat builds where you can’t see it, the sidewall gives up, and that’s behind a big chunk of the failures we get called out to. Run hard and the tyre’s barely touching the ground, so grip goes and the middle of the tread wears out in no time.

Get it right and the difference shows up where you’d want it to:

• Tyres go the full distance instead of dying early.
• Diesel stretches further. Less drag, less burn.
• It handles, loaded or on a slope, instead of feeling vague.
• Fewer flats and blowouts dragging the machine off the job.

Tyres wearing funny or not lasting? Pressure’s the first suspect, though tired or wrong-spec rubber muddies it too. Have a look at our TLB tyres, or tell us how you work and we’ll put a set together that fits it.

Where can you get TLB tyres and expert advice in South Africa?

We supply and fit TLB, truck, construction and agricultural tyres across the country, and the pressure and fitment advice doesn’t cost extra. One backhoe or a yard full of them, we’ll get the tyre, the size and the air right so you wring full life out of every set.

Want your machine’s pressures nailed down, or a worn set swapped out? Get in touch for a quote and a straight answer from people who fit these things every week of the year.

Frequently Asked Questions

What is the standard TLB tyre pressure?

35 to 45 psi on the front steers, 25 to 35 on the rears. Check it against your own sidewall and manual before you commit, since size and load rating shift it.

How do I convert kPa to psi for my tyres?

Divide by about 6.9. 240 kPa comes out near 35 psi, 310 kPa near 45.

What is 240 kPa tyre pressure in psi?

Around 35 psi. Common on TLB fronts and lighter commercial tyres.

Should I check tyre pressure hot or cold?

Cold. Before the machine’s worked or travelled. A warm tyre reads high and you’ll set it soft without knowing.

What tyre pressure should a 3 tonne truck run?

50 to 65 psi. Top of that when it’s loaded, ease it down a little when it’s empty.

Does ground condition change the pressure I should run?

It does. Hard ground and heavy loads, more air. Soft or sandy ground, less, so the tyre floats and grips instead of digging itself in.