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Re: How far can you drive on a spare tire ''donut''.
It should say on the Donut Not to exceed 35 Miles Per Hour. It is OK to drive on, Just make sure that it is Properly Inflated and you do not go too Fast as it will shred the tire and you will have a Bigger Problem!
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I don`t think you have cv axles in the rear of that.My guess would be wheel bearings could be grinding. Donut spares are strickly to be used for short periods of time and not to be driven at any higher rates of speed. Some damage may have occurred during the actual incident when you had the flat initially.Damage to the rear axle itself,
If the spare is the same size as the other tires you can drive like you normally would, but if it's just a doughnut you shouldn't go over 45mph, it will get you wherever you need to get a new tire installed, but I would not recomend driving it that way more than absolutely necessary.
Try rotating your tires from front to back. It may help with the noise. Get a front-end alignment which can also help with the noise by correcting a "rub" sound that originates from the 2 front tires fighting each other for control.
The place which replaced your bearings is probably correct. When you get bad bearings they do not always fail evenly across the 360 degree turning of the bearing race. If you imagine a donut with a flat spot representing your bearing- as the donut spins with the flat spot cause by a disintegrating roller, the tire is bolted to the donut. The tire is going to hit the pavement differently every rotation because of the play in the bearing is at that same spot.
This play will create small cups in the tire shape at the low spot transmitted by the bearing. When you replaced the bearing , the marks in your tire tread remained. These edges need to be worn off. Or some tire stores can Shave a tire, in an attempt to make it round again.
If you have a normal size spare, you can put the spare on the left front side of your vehicle and see if the noise goes away. If the rims are different on the spare, you can have everything remounted and pay for rebalancing and put the unused spare as a front tire. Then you know the spare is at least good as a spare, but noisy.
in the back storage area there is a circular plastic cover about 1.5" wide. pry this up with your tire tool and you'll find a hex nut. use the tire tool to loosen that nut and the tire will lower on a wire rope with a T handle in the center of the donut spare. reverse the procedure to replace it making sure you snug it tight.
Drive it under 45 miles per hour. The dough nut spare is designed to just get safely to a place to repair or replace the original tire. So as far as the question of how far can I drive the spare? As little as possible.
I believe driving on the donut spare has nothing to do with the problem-it isn't all wheel drive option is it? You say you added brake fluid, how low was the level? If it is losing fluid, you might have a rusted brake line that is leaking. Any evidence of a leak under the van? It's possible the master brake cylinder is bad, but this seems to be a sudden start of the problem. Did the tire blow out or did you go out to find it flat in the morning? I believe this is a leaking brake line issue. It is possible that if the tire blew out while driving, or you hit something (like debris) in the road, it may have damaged a brake line. As I mentioned earlier, it could just be a rusted leaking brake line. If brake fluid leaked on the exhaust or any hot components, it would give off a 'chemical' smell ( or even have an odor if it just leaked out) Let me know what you find.
if its what they call the little donut spare try to get it removed a.s.a.p., by law you are not supposed to run it over 40 miles(not per hour) i mean total 40 miles and if your in a hot area i suggest much less they are made only to get you to a tire shop or car dealer
It appears that you have the wrong size wheels on the rear (17). Standard tire size on that vehicle is 265/75/16. You all so have a full size spare. Keep in mind that if this is a 4 wheel drive vehicle, damage to the drivetrain can result if you continue to drive with diffrent size tires.