What to do when a tractor tyre goes flat

When a tractor tyre fails, the first job is safety, not speed. Tractor tyres are large and heavy; the wrong jack, the wrong spot or a rushed fix can cause serious accidents.

First steps

• On the road, slow down gradually without harsh braking; pull onto level, firm ground.
• Turn on hazard lights and place a warning triangle if needed.
• If a trailer or implement is attached, lower or secure it first.
• Don’t drive far on a flat; the tyre will be destroyed and the rim damaged.

Jacks and stands

Rear tractor wheels weigh hundreds of kilograms. Place the jack only at the maker’s lifting point, then support the tractor on solid blocks or stands. Never go under a wheel relying on the jack alone. Chock the other wheels too.

Repair or replace?

• Small tread punctures (nails, wire) can often be repaired with a proper patch.
• Sidewall cuts and tears generally cannot be repaired safely; the sidewall flexes constantly and patches don’t hold.
• If the tyre was driven flat for a long distance, inner plies may be damaged; have the inside checked even if it looks fine outside.
• With tube-type tyres, also check the casing; the object may still be inside.

If a water-ballasted tyre goes flat

The water drains and the tractor’s weight balance changes. After repair, the tyre must be refilled to the same level, which needs special equipment; leave it to a tyre shop.

Buying a replacement

Buy the same size and construction (radial/bias). You can find your model’s factory size on Tractor-Size. On 4WD tractors, watch the wear difference with the opposite tyre; if it is large, replacing both is better.