thanks for the help in advance guys... this weekend i did some horse trading for a set of tires and wheels they are 305/70/16 mounded on some factory alum wheels which i am guessing are only 7" rims since they came off the same year as my truck which is an 03 250 i questiond him about it and he said he never had any problams i guess my qestion is will they be ok to run for the winter untill i can get wider rims i only drive about 20 miles a week and no highway driving just country roads im not concernd with tire wear as im just using them for my winter tires my biggest concern is safety thanks again

 

you'll be perfectly fine. I'm running 315/75/16 tires on my factory 04 F-250 rims. tires wear nice and evenly and no issues coming off the bead.

with a truck tire, you can run wider tires with a taller sidewall. I wouldn't run that wide a tire on a 20" rim due to the extremely short sideway...but on a 16" rim it's just fine

 

It won't hurt anything.

 

yep - I have no problems with mine either - 315's on stock rims - love em and they are wearing fantastic and really kick butt in the slop (heading to duck blinds, etc)

 

thanks guys got the tires on they fit perfectlly they look like they are suppoosed to be on there im not running any kind of lift i was a little worried about rubbing but i have room to spare now if i can just decide on a psi to run in them the tires are max 55 right now im running 50 in the back and 45 up front i may go a little lower as soon as it really starts snowing

 

I would check the load rating on the tires, sounds like they are load range D with the 55 psi max. They won't carry what the truck is rated for since it came with load range E (80 psi max) stock. Which is fine as long as you don't carry anything in the truck. I run lower pressure in the winter too, but usually 55 psi down from 75 psi. On bad days I will drop again to 40 psi, but then I drive slow and easy.

Brian

 

65 max on d rated

 

Not for the OP's tire size! His are rated for a max of 50 PSI if they are load range D, 65 if they are load range E.

 

they are in fact load range d mastercraft courser c/ts