Tyre pressure is one of those things that quietly decides how well your forklift works. Set it right and the machine just behaves. Tyres wear evenly, the lift feels stable, operators get on with the job. Set it wrong and you’ll know about it soon enough. Patchy wear, a sluggish ride, poor stability, and the kind of blowout that always seems to happen mid-lift with a full load on the forks.
We’ve been supplying and fitting forklift tyres around South Africa for years now, and a handful of questions come up over and over. What pressure should this thing run? Why does the chart say one figure for my tyres and something else for the next bloke’s? My 3 ton lift feels heavy and slow, is that a tyre thing? Fair questions, all of them. So here’s the lot in one place.
What is the correct forklift tyre pressure?
The correct forklift tyre pressure depends on the tyre type and size, but pneumatic forklift tyres generally run between 90 and 130 psi (roughly 6.2 to 9 bar). The exact figure is stamped on the tyre sidewall or listed in your forklift’s manual.
It’s a wide range, and there’s a good reason for that. A small warehouse lift shifting a one ton load doesn’t need anywhere near the pressure of a big machine wrestling shipping containers about. What actually sets the number is the tyre size and the load it’s carrying.
Three things to check before you put any air in:
- The pressure rating moulded into the tyre sidewall
- The load your forklift is rated to carry
- What the manufacturer recommends in the operator manual
When those three don’t agree, the sidewall rating is your ceiling. Never go past it.
How do I read a forklift tyre pressure chart?
A forklift tyre pressure chart matches your tyre size to its recommended inflation based on the load rating. Find your tyre dimensions in the left column, read across, and there’s your psi or bar figure.
Forklift tyre sizes look like a jumble at first, but the numbers are telling you something. Take 7.00-12, a size you’ll see everywhere. The 7.00 is the width in inches and the 12 is the rim diameter. Match it exactly, because a 6.00-9 and a 7.00-12 don’t run anything like the same pressure.
Here’s a rough reference for common pneumatic sizes used around the country:
Tyre Size | Typical Pressure (psi) | Typical Pressure (bar) |
6.00-9 | 100 to 115 psi | 6.9 to 7.9 bar |
7.00-12 | 110 to 125 psi | 7.6 to 8.6 bar |
28×9-15 | 115 to 130 psi | 7.9 to 9.0 bar |
8.25-15 | 125 to 140 psi | 8.6 to 9.7 bar |
Use this as a starting point and nothing more. Brands differ, and your real load is what counts. Always check it against the sidewall and the manual. If you’d rather have something to pin up in the workshop, a forklift tyre pressure chart PDF for your particular tyre brand is worth keeping handy.
What is the correct 7.00-12 forklift tyre pressure?
A 7.00-12 forklift tyre usually runs between 110 and 125 psi (about 7.6 to 8.6 bar), depending on the load rating and ply. It’s one of the most common pneumatic sizes on mid-range forklifts here, which is why we keep it on the shelf.
What is the correct 6.00-9 forklift tyre pressure?
A 6.00-9 forklift tyre typically sits between 100 and 115 psi (around 6.9 to 7.9 bar). You’ll find it as a drive or steer tyre on compact and lighter machines. It holds less air, so it feels under-inflation faster. Worth checking a bit more often.
What tyre pressure does a 3 ton forklift need?
A 3 ton forklift on pneumatic tyres generally runs between 110 and 130 psi (roughly 7.6 to 9 bar). But the figure comes down to the tyre size your machine is fitted with, not the lifting capacity on its own.
This is the one we get asked about most, and the straight answer is that “3 ton” tells us what it lifts, not what tyres it wears. Two 3 ton forklifts from different makers can run different sizes and therefore different pressures. So find the tyre size first, then match it to the chart. Not sure what’s on yours? Snap a photo of the sidewall and send it through. We’ll confirm it.
How do I convert psi to bar for forklift tyres?
Divide the psi figure by 14.5. So 100 psi comes out to roughly 6.9 bar, and 130 psi lands at about 9 bar.
Most forklift gauges over here read in bar, while a lot of the tyre paperwork and imported manuals quote psi. Keeping the conversion close by saves a fair bit of head-scratching on the floor:
- 90 psi = 6.2 bar
- 100 psi = 6.9 bar
- 110 psi = 7.6 bar
- 120 psi = 8.3 bar
- 130 psi = 9.0 bar
Going the other way, multiply bar by 14.5 to get back to psi.
What happens if forklift tyre pressure is wrong?
Wrong tyre pressure brings on uneven wear, poor stability, higher fuel or battery use, and a genuine risk of the tyre letting go under load.
Under-inflated tyres flex more than they should. That flexing builds heat, the casing breaks down, and the tyre fails, usually at the worst possible moment with a full load up high. Over-inflate it and you get the opposite problem. A hard ride, tread wearing out down the middle, and a smaller contact patch right when you need grip and stability for stacking.
Things to keep an eye on:
- Wear on the edges, which points to under-inflation
- Wear down the centre, which points to over-inflation
- The forklift pulling to one side
- More vibration or a rougher ride than normal
- Bulging or cracking on the sidewall
Spot any of that and it’s worth a look before it becomes a breakdown. We handle forklift tyre fitment and replacement across the region and can usually get jobs turned around quickly.
How often should I check forklift tyre pressure?
Once a week is the minimum for machines in regular use. For forklifts running heavy or back-to-back shifts, make it daily.
Pressure drops on its own over time, and temperature plays its part too. A tyre read on a cold morning shows lower than the same tyre after a hot afternoon of work. Best to fold the check into your pre-start routine. A minute’s effort, and it’s about the cheapest insurance you’ll buy for the fleet.
A few habits worth getting into:
- Check when the tyres are cold for a true reading
- Use a decent gauge, not a battered workshop one that reads whatever it fancies
- Jot down the readings so a slow leak shows up before it becomes a flat
- Have a look at the tread and sidewall while you’re down there
Do solid and cushion forklift tyres need pressure?
No. Solid rubber and cushion tyres carry no air, so there’s nothing to inflate or keep an eye on. Pressure checks are a pneumatic tyre thing only.
This catches people out, especially in mixed fleets. If your forklift’s on solid tyres, your attention shifts to chunking, flat spots and tread depth instead of pressure. Not sure which type you’ve got? The valve stem gives it away. No valve, no air.
Where can I buy forklift tyres in South Africa?
GP Forklifts supplies, fits and services forklift tyres across South Africa. We stock the common pneumatic sizes like 6.00-9 and 7.00-12, plus solid and cushion options for most makes and models.
We look after operators running anything from a single machine to a full fleet, and we keep the fast-movers on the shelf so you’re not stuck waiting with a lift out of action. Straight tyre swap, a pressure check, or just a steer on the right tyre for a tricky application, we’re glad to help.
Got a query or need pricing? Send through your tyre size or a photo of the sidewall and we’ll sort out the right fit and a quote for you.
One thing for anyone who landed here searching auto and truck tyres vacancies: that’s a different game to forklift tyre supply. If it’s forklift tyres or fitment you’re after, you’re in the right spot. If it’s work in the tyre trade you want, you’ll have better luck checking listings with the auto and truck tyre retailers directly.
FAQ Section
What is the correct forklift tyre pressure?
Pneumatic forklift tyres generally run between 90 and 130 psi (6.2 to 9 bar), depending on tyre size and load. Always confirm against the pressure stamped on the sidewall.
What tyre pressure does a 3 ton forklift need?
A 3 ton forklift on pneumatic tyres usually runs between 110 and 130 psi (7.6 to 9 bar), set by the tyre size fitted rather than the lifting capacity.
What is the correct 7.00-12 forklift tyre pressure?
A 7.00-12 forklift tyre typically runs between 110 and 125 psi (7.6 to 8.6 bar) depending on ply and load rating.
What is the correct 6.00-9 forklift tyre pressure?
A 6.00-9 forklift tyre usually runs between 100 and 115 psi (6.9 to 7.9 bar).
How do I convert psi to bar?
Divide the psi figure by 14.5. So 100 psi equals roughly 6.9 bar.
How often should I check forklift tyre pressure?
At least weekly for regular use, daily for heavy or continuous shifts. Check when the tyres are cold for an accurate reading.
Do solid forklift tyres need pressure?
No. Solid and cushion tyres carry no air, so pressure checks only apply to pneumatic forklift tyres.
