I am thinking of putting these on my 17" Expedition winter wheels as I will be needing new tires on them soon. Will I be alright with these on my 2007 FX4 Screw (almost 6k lbs.)? I am slightly nervous as they are a load range C. Once again, these will only be on in the winter months. Thanks.

http://cgi.ebay.com/ebaymotors/LT-25...Q5fAccessories

 

They will work as long as they are not over stressed by heavy loads. Load Range C or D radial light truck tires have plies reinforced with metallic cords. At least one of the plies has an inch strength of at least 11,500 N/mm2 per in. and is reinforced with 0.32 mm-0.40 mm filament diameter ultra tensile steel cords at 17-24 ends per inch. I hope this helps...

 

That more than helped. I love when members can actually back up their answer with facts like that. (Assuming he did not just make all that up - who cares even if he did, it sounds good and that is 90% of the battle)

 

Can't you also look at the max load per tire and compare that to stock?

I think the tires on my 06 F-150 are rated for 2300lbs/tire but the C loads I'm looking at are rated for 2650lbs/tire max so they are better then stock by that right? I should be good to go?

 

First, your 07 has the TPMS so swapping will trigger an annoying indicator lamp on the dash. Wont hurt anything, but may drive you nuts.

jdruzik offered some interesting info.

Here's some details regarding the actual load ratings of the tires you're looking at vs what your FX4 has from the factory. The BFG tires shown in the ebay link, have a load rating of 2405 lbs. If your FX4 had Rugged Trail T/A's their rating was 2601, if you had the optional LT tires, Wrangler ATS, which were C range they have a load rating of 2535.

Your FX4 Screw either has a 3750 or 3900 front GVWR so any of these tires offer ample capacity.

One more thing to consider, see if a local tire shop will meet or beat this price (didn't pay attention to see if it was good or not). If you have issues with the tires, you'll be able to get it addressed quicker and eaiser at a local shop vs online. Plus, you'll be helping your local ecomony. Just offering my 2 cents.

Hope this helps.