How fast on spare

Any less could lead to a whole host of problems. Driving at high speeds with low pressure increases contact with the surface of the road, and the heat from that friction can cause tread separation or complete tire failure. Take things slow and get that spare changed ASAP.

One last big reason to not drive fast or far on a spare tire is how much use you will get out of that spare tire. If you drive a full 50 miles or drive fast with hard acceleration, your spare tire may only last once and you'll have to replace it as well as fit a new tire. If you carefully make your way to the nearest repair shop at low speed, the likelihood is that your spare tire will be perfectly fine to go back into your trunk so you can use it next time you have a puncture.

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Maximum speed for driving on a spare tire Although this may vary a little, in the vast majority of cases, the maximum speed you can drive on a spare tire is 50 mph. What will happen if you drive too fast on a donut spare tire? Remember to not drive too fast when you're driving on a spare tire. Join our email list! Related posts. Top 10 most useful gadgets to take on your road trip. Road trip with a baby — here is what you need to know.

Share this site! By AAA Automotive. Search More Facilities. If you don't have a manual, 70 miles is the rule of thumb. Temporary, donut spare tires are not designed for long-range service. They are made to get you to a garage to have your tire either repaired or replaced. Driving on it for an extended period of time under regular driving conditions will result in a blowout in short order, so get a safe tire on your car immediately. Donut spare tires are not made for extended service. They have little tread to speak of, the carcass or body of the tire is not reinforced, and there is no belting to protect it from punctures and road imperfections.

The tire is designed simply to get you to a repair facility. Most of these tires offer a maximum life of 70 miles. There's another reason to avoid driving on the spare: mechanical damage. The smaller spare tire can cause premature wear on your differential. Replacing the differential is a lot more expensive than replacing a tire. Trust us. Get the tire repaired as soon as possible, and don't push your luck.

It should say right on the side of the spare tire, or on the wheel itself on a large, prominent sticker. If that's missing or illegible, the rule of thumb is to not drive faster than 50 mph with a donut spare tire. Going faster could cause tire failure, differential damage, or both. Try to avoid the freeway if possible. And get to a tire repair facility as soon as possible.