if you dont have access to a tire machine,and you dont want to pay the high price which is ridiculous,try this if you are handy with a few basic tools and have the time to do so.
if you are not going to save the tire,and be careful not to cut yourself,let the air out of the tire.
now,with a sharp knife,cut the tire across the tread down to the bead,now cut it again at an angle like a pie shape and remove this piece.
if this is a tube type tire,plan on new tubes as you most likely will cut the tube.
now,with a pair of side cutters,nip away at the strands of cable that make up the bead until you have it cut in two,if you are lucky,yours will be made up with cord instead of wire and will cut easily,do both sides this way and the tire will easily peal off of the rim,should take about ten minutes to do both sides if made up of wire,sooner if corded type.
clean up the rim if it is rusty or corroded.
mix up some dish soap and water to create a lubricant,apply the lube to the bead and the rim,work the first side down with out any tools as the first side usually slides on fairly easy.
the second side can be a little tricky to get it over the lip of the rim,so using two phillips screw drivers,work the bead down over the rims lip all the while making sure the started lip is kept in the deepest part of the rim.
use a couple of vise grips along the rims edge to help keep the tire from backing off while you work it down.
you dont want to use straight screw drivers as you risk cutting the bead with the flat edge.
if you have trouble inflating the tire and getting it to seat,wrap a rope tightly around the center of the tread,this will most often force the beads out against the rim and let you inflate it,remove the rope as soon as the tire starts to inflate.
if you just cant get it to inflate,a tire shop should be able to do it for you at minimal cost to you as you have done the hard part.
tube type tires are a little more tricky as you dont want to poke a hole in the tube while wrestling the second bead on,use a lot of patience here.
again,you can use vise grips along the rims edge to help hold the tire in place while you work it down.
inflate and deflate the tube a couple of times so it will find its place in the tire,then fill to proper pressure.
note,if the tires have directional tread,make sure the new tires tread is facing the proper direction before installing it,other wise you will have to remove it,but thats easy as it has not been seated yet,just frustrating.
the bead cutting trick will work on the split rim also if they are the type that split in the middle of the rim and you dont have to unbolt the rim halves,but it makes it easier to put the tire on,just more time involved removing and replacing the bolts,be dang sure the bolts are torqued properly before inflating the tire.
I have done this several times myself in years past on about any tire out there,tractor,atv,car,you name it,just take your time,it can be done.
