Well first off a bad alignment has cracked my origional steel rim, after i noticed the crack I took off the tire and noticed the rotar was extremely hot it wasnt shaved or anything just hot it sounded like my berrings but when i grabbed the rotar i could pull it forward and back now i dont think thats good at all any sugjestions 96 nissan altima?

sounds like an alignment problem with bad shocks

.Have a tyre shop check for air leaks at the rim and valve stem and for cracks in the rim . Check for puncture material ( nails bolts steel, stakes). have the tyre removed and check for side wall failure ( running flat-under inflated) or for steel band failure that has penetrated the rubber covering

DO YOU HAVE LOCK NUTS? WHEN YU CHANGED YOUR TIRE DID YOU USE A TORCWRENCH? IF NOT YOUR OVER TIGHTENED AND NOW THEY DUG INTO THE RIM.
RIM ALLOY OR STEEL? IF STEEL GET A TORCH AND WARM IT UP,
IF ALLOY, NO TORCH UNLESS VERY MINOR HEAT..GET A LONG PIPE, FIT IN ON THE TIRE IRON FOR MORE LEVERAGE AND (REMEMBER LEFTY LOSEY RIGHTY TIGHTY).. AND STEP UP ON IT.. IT WILL COME OFF. ALL ELSE FAILS GET A BIG DRILL OR ROTATING SANDER/GRINDER AND SAY BYE BYE BY DRILLING THE NUT OFF AND SANDING DOWN ONE SIDE UNTIL YOU JUST TOUCH THE LUG THREAD.. AND GET A NEW LUG NUT, AND A TORQUE WRENCH FOR NEXT TIME, 9 FT/LBS SHOULD DO IT,
IF YOU USED YOUR HANDS LAST TIME, IT IS EASY TO PUT 120-180FT/LBS INTO IT, BUT YOUR RIM MAY CRACK IF TO HARD.. GOOD LUCK

I'm assuming it is a TPMS sensor valve stem? I do not know o any reason the rim would break when replacing it, unless the rim was already cracked around the valve stem hole due to some kind o impact, in which case, the rim should be replaced anyway. As far as fixing it yourself. Unless you can break down the bead seat of the tire and unmount the tire from the rim, you will not be able to replace it yourself. Once the tire is of the rim, the sensor is held in place by a 11mm or a 12mm hex collar. When you remove this collar, the sensor will pull right out from the inside. ANY tire shop should be able to do this for you for very little charge.

try your nearest salvage yard or order online dont know where you are im in canada so cant tell you where to go for sure

This problem is normally caused by one of two things, either an out of alignment front end or a bad, unbalanced, or underinflated tire. A out of aligned front end will normally cause uneven wear on your tires, check for uneven wear and for any noticable cracks on the tires, then take to a alignment/tire shop and request a FREE quote to repair.

If it is a tire related howl you are getting as well as the vibration through the steering wheel once you hit about 60 mph there is a number of things you need to do.

1. If you have not had a wheel alignment carried out on the vehicle in the last 6 months then have it done at a reputable suspension specialist (not a tyre dealer). Check your front tires for wear pattern in any event as uneven wear on the tyre is a sure sign of poor alignment. Bad alignment can also contribute to vibration problems. I will guarantee you that when you get the alignment checked it will be out. I am not sure if the rear alignment is adjustable on your model but if it is you will in fact need a 4 wheel alignment. (REFER point 7 also)

2. When the alignment and other necessary front end work is done check to see if the problems persists..

3. I assume your vehicle has the steel rims fitted with the plastic wheel cover. Remove the covers on the front wheels and check for the vibration. If it disappears then the out of balance condition is caused by the covers. (This would not explain the tyre howl though).

4. Remove both front wheels (clean them) and check for damage to the rims on both sides including outside scuffing. (Check tyres also.)
If the steel rim is bent or warped it will not run true and you will get vibration and the tyres will tend to be noisy on the road. It is not always easy to identify a warped steel rim from a visual check. Spinning the wheel on a wheel balance machine should normally show this up though.
If you have alloy wheels fitted these tend to crack and break rather than bend or warp.

5. Out of balance wheels.

It is possible for a wheel to be so badly manufactured that no amount of balancing on a tyre balance machine will fix it. This is a particular problem with cheap alloy wheels but even good quality wheel manufacturers will occasionally let a bad alloy wheel slip past their quality control .

6. Tyres.
If you buy budget tyres you are generally buying poor performance and potentially poorly constructed tyres. Tyres can be produced with inbuilt heavy spots that will make them impossible to properly balance. You will forever have a balance problem (and hence vibration) with such tyres. A good manufacturer will not allow such tyres to slip through quality control. Others are much less fussy. It is always a bad decision to purchase tyres in the lower price ranges.
In your case it is quite possible that if your wheels are ok the tyres are badly constructed and it is not possible to balance them properly. (This would not explain the tyre howl though).

7. Given the age of your vehicle you should have the front suspension and steering components inspected. It is possible that wear in critical components could be the source of the problem. When you take the car to the suspension specialist for the wheel alignment you need to have the front end fully checked over first and any problem areas attended to.

Without test driving and pysically inspecting the vehicle it is not possible to identify the source or sources of the problems. My best estimate is that there are significant wear problems in front end components and that your front end aligment is also out.
However , I hope this helps.

First thing to check is air pressure,
Second is to have that wheel put on a spin balance machine to see if the tire's steel bend shifted,or the wheel got bent,or a weight came off.
If all those check out,Then check the steering for any loose parts,
The last is check the front alignment.

Put on the spare tire and see if that helps. If it does, go to the tire store and use your hazard coverage for them to check your rim for being bent or your tire from having a bruised belt. The rim is your responsibility, the tire is the tire stores. An 04 should have spare rims in Salvage yards. You can go online for those if need be.

i had the alignment done about six months ago at the dealership. Would they have been able to align the car if something was bad? Not sure how they deemed the new tires bad, but they said they moved the tires from left to right and front to back and could control the shimmy and shake. this has went on for about a year. I dont believe the new tires the first time were bad, i believe the rim was bent. I dont know what to do. These tires have about 10000 miles on them, have been balanced twice, a rim was replaced due to them saying it was bent, but yet, the vibration starts at about 55 and gets worse as you gain speed. Can even feel it in the passenger seat in the front as well. Steering wheel shakes. You can actually see your hand shake while you are driving it, but then at times, it seems to go away and start again. Thanks for any suggestions.