Backup tire question

Stover

So earlier today I had a blown tire. Luckily I was at a stoplight, so it was just a matter of pulling over and breaking out that wimpy backup tire. Then I had to call in a friend with an air pump because it was flat.

I have no time to get new tires before a job interview tomorrow. This interview will take place some 25 miles away. The road is all US highway, so it will be a maximum speed limit of 45MPH.

How risky will this be? Is there anything I can do to reduce the risk? The only thing I can think if is making sure the tire is fully pumped before leaving. Is there anything else?

BlochWave

I blew a tire in my school parking lot, replaced it, and drove 30 miles home once

I think the number often quoted is 50 miles, and don't go over 55mph or so

MKR

Spare tires are typically made to go far enough to get the regular tire fixed. If you have a full tire as a spare, you should be fine. If it looks puny, I would not recommend it.

Lord Yod

Check the air pressure before you get on the freeway, and keep your speed low. On most cars you'll want the spare on either rear wheel because you really want all available traction up front. There are a few cars where putting mismatched tires on the same axle can cause damage, though, so check your owner's manual about that.

Stover

As it turns out, I'm going to be able to borrow a car for this anyway. In all likelihood, this is the best idea.

Thanks for your information though. Lock away.

Everywhereasign

The investment in a full size spare is worth it IMO. It's really nice to change your tire and not worry about changing your driving or shifting the load in your vehicle.

Speakeasy

I've driven 228 miles (just checked on maps.google.com) on a spare tire before...I think you will be fine if you stay under 55.

Lloren

after having been a mechanic i have dealt with cars way to much. parts are normally recommended to use for a time less then they are reasonably able to use. but i have seen spare tires go for weeks, and at speeds over 70mph.

the simple advice it use it as little as possible, but if you have to use it then you have to use it, just be prepared for it to not work if you are pushing its limits.

saltiness

Everywhereasign wrote: »

The investment in a full size spare is worth it IMO. It's really nice to change your tire and not worry about changing your driving or shifting the load in your vehicle.

The reason cars usually come with a smaller spare though is that theres nowhere to put a full size tire.

Fats

Yes, just make sure it's inflated properly. Look on the sidewall, donuts usually take more pressure than your average tire.