Tire size on my 2014 SCREW is 275/55R20. In the owners manual, it says not to use chains on these. Any idea why? If it is a matter of possible damage to the rims, if I used a couple of cheap rims and tires with chains, would that somehow void any warranty? The ski area I go to sometimes requires chains and this is the first vehicle I have had that actually stated to not use them. Thanks for any help.

 

I have the stock P275/65R18s (think I have that right) on my 13 FX4 SCREW and found the same warning for my exact tire.

I called Ford who contacted their engineering folks and came back with it being related to the setup on my truck and how a chain would mess with the traction control and could affect the drive train and how the system would read feedback with chains/cables. On my EXACT tire size but no other? Can get the chains but cables too? Would really like someone savvy to explain that to me a little better.

Always sheepishly pass the chain up areas during winter wondering if Ford really thinks the stock SR-As and 4wd are enough for serious winter weather...

 

If your worried about your stock GoodYears are not good enough for winter buy new tires

 

Try snow tires?

 

I think the reason the OP wants chains is. 1) they're cheaper than buying a new set of tires. 2) it looks like he'a required to use them anyway at the resort he's going to regardless of tire type

 

I agree, but what can he do if he can't chain up?

 

20's don't have enough side wall to mount chains correctly. There needs to be enough side wall so the chains don't ride on the rim.

Yes, the traction control will get wigged out by the chains, if there ladder type. Just buy a set of diamond chains that always have contact with the road. This will keep the traction control happy. Ladder chains slip between sections and the traction control will cut throttle.

Lastly...don't run them on the front. There is very little space between the upper control arm and the tire. If front is needed...get cables. Also, get cam locks...and put rubber keepers on the outside.

 

I don't get it. Buy chains that fit the damn tires, make sure they are tight enough, and have clearance, turn off the damn traction control, and don't do any speed runs.

I have never used chains on a 4x4 but have on a 2wd truck and an ordinary RWD Ford sedan.