yes these rims will fit your 800 series 5 tons as they use the same axles as my older 5 ton. Here is a picture of my 5 ton with the same rims. you should consider buying 7 rims so that you will have a spare. the rims are too thick for the standard front stud length so you will either need to install longer studs on the front hubs, or you can extend the front studs by the following method. clean the threads on the front studs back to the hub and screw on the inner stud nuts(which you will no longer need for the rear) from the rear dual wheels(the method i used). If you use the 2nd method(I used the 2nd) to extend your front studs, be sure to buy one of those geared lug wrenches used to separate the outer rear lug nuts from the inner stud nut to avoid any difficulty later with the removal of your front rims. the rims sell for up to 5 time what you quote.