How long can you drive with a spare tyre in Australia? Usually, a temporary space saver spare is only built for around 50 to 80 kilometres and driven at speeds under 80 km per hour.
If you drive further, the tyre starts to wear unevenly and the risk of a blowout dramatically increases. For Mustang owners without a proper spare fitted from the factory, it is really useful knowing that there is a spare wheel kit designed specifically for Mustangs.
Most vehicle manufacturers, including Ford, print a recommended limit somewhere on the space saver tyre itself or in the owner’s manual. As a general rule, the distance sits between 50 and 80 kilometres, and the maximum speed is usually capped at 80 kilometres per hour. These numbers exist for a reason. A space saver is built lighter and narrower than a full size tyre, purely to save weight and boot space, not to perform like the tyre it is replacing.
Many drivers assume that how long you can drive on a spare tyre is a fixed number that applies to every car, but it actually depends on the tyre itself, the load in the vehicle, and the road conditions on the day.
The compact design that makes a space saver easy to store is exactly what limits how far it can go. A narrower tyre wears faster under load, generates more heat at speed, and offers less grip in wet conditions. Combine that with a smaller diameter than the other three tyres on the car, and you get a mismatch that puts extra strain on the drivetrain the longer it stays fitted. On a rear wheel drive car like a Mustang, that mismatch matters even more, since the differential works harder to compensate for the size difference.
That is why the question of ‘how long can you drive with a spare tyre’ comes up so often among Mustang owners planning a longer trip, rather than a quick run to the mechanic.
The 50 to 80 kilometre guideline assumes reasonable conditions: a sealed road, a moderate load, and no extreme heat. Push those conditions and the safe distance drops. A fully loaded car, a hot summer day, or a stretch of rough country road will all shorten how far you can reasonably expect a space saver to last.
This is exactly why a quick trip to the tyre shop can turn into a real problem if it happens to fall in the middle of a longer drive, well outside town where the nearest fitter might be hours away rather than minutes.
Push a space saver past its rated distance or speed and the risks stop being theoretical. The tyre can overheat and separate, the sidewall can fail without warning, and on a Mustang specifically, prolonged use can put unnecessary load through the differential and driveline. None of this is likely in the first few kilometres, but it becomes a real possibility the longer that spare stays fitted, particularly at speeds above the recommended limit.
This is the exact gap the DriveSava Spare Wheel Kit was built to close. Rather than relying on a compact space saver with a hard limit on distance and speed, it gives Mustang owners from the 2015 model onwards a genuine full size spare that fits without eating into boot space or interfering with Brembo brake packages. It will not solve every roadside problem, but it does mean a flat tyre on a long drive becomes a minor delay instead of the start of a much bigger one.
How far can you drive on a spare tyre?
Most space saver spares are rated for around 50 to 80 kilometres, though this can vary by vehicle and tyre condition. Check the sidewall of the tyre itself or your owner’s manual for the exact figure.
Can you drive on a spare tyre at highway speed?
Generally, no. Most manufacturers cap speed on a space saver at 80 kilometres per hour, well below typical highway limits, and driving faster increases the risk of tyre failure.
Is it worth fitting a full size spare instead?
For anyone doing regular long distance driving, particularly in a car like a Mustang that does not come with a proper spare from the factory, a full size option removes the guesswork around distance and speed limits altogether.
Knowing how long you can drive with a spare tyre is useful information, but it should not be the plan for a serious road trip. If you are heading off on a long drive, check out the DriveSava Spare Wheel Kit range or get in touch with the Pony Parts team to confirm fitment for your Mustang before you need it, not after.
