The short answer: Towing adds weight, heat and load to your tow vehicle’s tyres — especially the rears — so they wear noticeably faster than the same car driven unladen. Extra load makes rubber run hotter and deflect more, and correct (higher) tyre pressures plus gentle driving are what keep the damage in check.
Hitch up a caravan, camper or loaded trailer and your tow vehicle is suddenly working far harder. That extra effort lands on the tyres. Towing doesn’t just use a bit more tread — it changes how the tyre runs, and if you get pressures or loads wrong it can destroy a tyre well before its time. Here’s exactly how towing shortens tyre life, and what actually helps.
Why does towing wear tyres faster?
Three forces stack up when you tow. First, weight: the towball download plus the drag of the trailer pushes more load through the tyres, particularly the rear axle. As a rough industry rule of thumb, every extra ~450 kg of load can lift tyre wear by around 20%. Second, heat: a loaded tyre flexes more with every rotation, and flexing generates heat — the single biggest enemy of a tyre. Third, traction stress: pulling a heavy load means the drive tyres transmit far more torque, scrubbing tread as they claw the car and trailer up to speed and up hills.
Which tyres wear fastest when towing?
On most utes and 4WDs the rear drive tyres take the brunt — they carry the towball weight and put the power down. The trailer or caravan tyres are a separate story: they often run at high pressures, sit in the sun for long periods and age out before they wear out. Don’t forget the load rating either. If your tyres only just meet the placard when unladen, towing can push them past their safe capacity — our guide to fitting the wrong load rating explains why that matters.
| Factor | Unladen driving | Towing near capacity |
|---|---|---|
| Load through tyres | Kerb weight only | Kerb + payload + towball download |
| Running temperature | Moderate | Higher — more flex, more heat |
| Drive-tyre torque | Normal | Much higher, more scrub |
| Correct pressure | Placard cold pressure | Raised per placard/maker load table |
| Relative wear rate | Baseline | Noticeably faster, uneven if under-inflated |
How do tyre pressures change the picture?
This is where most towing tyre damage actually comes from. A tyre carrying extra weight needs more air to support it. Run towing loads on normal pressures and the tyre over-deflects, builds heat and can wear its edges — or in the worst case, fail. Most vehicle placards list a higher “laden” or “towing” pressure, and set it cold. Get the numbers and method right in our complete guide to tyre pressures for towing a caravan, and don’t overlook the spare’s pressure — the one everyone forgets right before they need it.
Does towing legality affect your tyres?
Yes. Towing in Australia is governed by your vehicle’s GVM (Gross Vehicle Mass) and GCM (Gross Combination Mass), and your tyres must legally be able to carry their share of those masses. Overloading is both unsafe and an offence. The full picture — load ratings, GVM and GCM — is in tyre rules for towing, and off-road tourers should also read how much weight your tyres can actually carry off-road, where lower pressures change the sums.
How do you make tyres last longer when towing?
- Set laden/towing pressures cold before each big trip, front and rear, using the placard or the tyre maker’s load-and-pressure table.
- Don’t exceed your load rating. If you tow often, choose tyres with a load index and construction suited to it — see the best towing tyres for a dual-cab ute.
- Drive smoothly. Gentle acceleration and early braking matter even more with weight behind you; the same habits in how driving style changes tyre life apply double when towing.
- Manage heat. On long hot climbs, back off the speed — heat is what kills a towing tyre.
- Rotate and inspect often. Check for uneven or edge wear after big trips and rotate on schedule so the hard-working rears even out.
How do you tell towing wear from an alignment fault?
Towing wear and an alignment problem can look similar, so it’s worth knowing the difference before you spend money. Wear from towing is usually even across the tread but simply faster, and concentrated on the rear axle that carries the towball load. An alignment fault instead leaves a one-sided or feathered pattern — the inside or outside edge going noticeably faster than the rest, on tyres that haven’t done big kilometres. If your rears are wearing flat but quickly, that’s the price of the load and heat. If one edge is disappearing while the other looks fine, get the alignment checked; the wear-pattern guide shows exactly what each shape means. Heavy towing can also knock alignment out over time, so a check before and after a big touring season is money well spent.
Bottom line: Towing shortens tyre life mainly through load and heat. You can’t remove the weight, but correct laden pressures, staying inside your load rating and smooth driving turn “destroyed early” into simply “a bit faster than normal”.
Frequently asked questions
How much faster do tyres wear when towing?
It varies with load, but expect meaningfully faster wear on the tow vehicle’s rear tyres. As a guide, tyre wear rises steeply with weight — roughly 20% more per extra ~450 kg — and under-inflation makes it far worse.
Should I increase tyre pressure when towing?
Usually yes. A loaded tyre needs more air to avoid over-flexing and overheating. Follow your placard’s laden/towing figure, set cold. Details in tyre pressures for towing a caravan.
Do I need special tyres to tow?
Not always, but you need enough load rating and, for heavy or frequent towing, a stronger construction. See tyre rules for towing and the best towing tyres.
Why do caravan tyres crack before they wear out?
Trailer and caravan tyres often cover few kilometres but sit in the sun, so they age and crack before the tread runs out. Age matters as much as tread — see when to replace tyres.
External references: RAC WA — calculating caravan tyre pressure; Bridgestone Australia tyre care.
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