Any news from your end?
My dealer found this, and its not good. I cant post a PDF on this forum, so here is cut and paste text. I copied the whole document for context. Not every FWD car prohibits chain usage. Note that only the Taurus mentions spike spider type traction devices, which I hoped to use if inboard tire to suspension clearance was the issue with the Fiesta.
Tire Chain Usage - 2011 Model Vehicles
The “Tire Chain Usage” information applies only to vehicles as manufactured by Ford Motor Company and its
affiliates, equipped with original equipment tire and wheel assemblies. See your Owner Guide for additional
information and warnings.
NOTE: Do not use tire chains with aluminum wheels, chains may chip the wheels. Use only SAE Class “S” chains.
Crown Victoria, Grand Marquis
Use only cable type chains offered by Ford Motor Company as an accessory or equivalent. Using SAE class “S” or other conventional link type chains may cause damage to the vehicle’s wheel house and/or body.
Edge
Do not use tire chains, cables or optional traction devices on 20 inch or 22 inch wheels. Only use cable chains on 17 inch wheels with P235/65R17 or P245/60R18 tires. Install
cable chains only on the front wheels.
Escape, Mariner
Use only SAE Class “S” cables on the front axle for P235/70R16 or P225/65R17 tires.
Escape Hybrid, Mariner Hybrid
Use only SAE Class “S” cables on the front axle for P235/70R16 tires.
E-Series OK
Expedition, Navigator
Do not use tire chains on front wheels; they may interfere with suspension components. Use only cable type chains. Using SAE class “S” or other conventional link type chains may cause damage to the vehicle’s wheel house and/or body. Do not use tire chains on P275/55R20 tires.
Explorer Not available yet
F-150 Not available yet
F-250/350/450/550 Do not use tire chains on vehicles equipped with 20 inch wheels and tires.
F-650/750 N/A
Fiesta
Do not use any type of tire chains. This includes both conventional and cable type chains.
Flex
Use only SAE Class “S” cables or equivalent on the front axle for P235/60R17, P235/60R18, and P235/55R19 equipped vehicles. Do not install tire chains, cables, or optional traction devices on the rear tires. This could cause damage to the vehicle’s wheel house or body. Do not use tire chains, cables, or optional traction devices with 255/45R20 tires.
Focus
Do not use any type of tire chains. This includes both conventional and cable type chains.
Fusion, Milan
Use only SAE Class “S” cables or equivalent on the front axle for P205/60R16 equipped vehicles. Do not install tire chains, cables, or optional traction devices on the rear tires.
This could cause damage to the vehicle’s wheel house or body. Do not use tire chains, cables, or optional traction devices with optional P225/50R17 or P225/45R18 tires.
Fusion Hybrid, Milan Hybrid, MKZ Hybrid
Do not use any type of tire chains. This includes both conventional and cable type chains
MKS
Use only SAE class “S” cables or equivalent on P235/55R18 tires on
the front tires only. Do not install tire chains, cables, or optional traction devices on the rear tires. This could cause damage to the vehicle’s wheel house or body. Do not use tire chains, cables, or optional traction devices with optional P255/45R19 or 245/45R20 tires.
MKT
Use only SAE Class “S” cables or equivalent on the front axle for P235/55R19 equipped vehicles. Do not install tire chains, cables, or optional traction devices on the rear tires. This could cause damage to the vehicle’s wheel house or body. Do not use tire chains, cables, or optional traction devices with optional 255/45R20 tires.
MKX
Do not use tire chains, cables, or optional traction devices on 20 inch or 22 inch wheels. Only use cable chains on 18 inch wheels with P245/60R18 tires. Install cable chains only on the front wheels.
MKZ
Do not use any type of tire chains. This includes both conventional and cable type chains.
Motorhome OK
Mustang
Only use SAE Class “S” chains on rear wheels for P225/60R17 tires. Do not use tire chains with any other size tire.
Ranger OK
Taurus
Use only SAE class “S” cables or equivalent on P235/60R17 or P235/55R18 tires on the front tires only. Use of optional spike spider type traction devices or equivalent is also acceptable. Do not use tire chains, cables, or optional traction devices with the optional P255/45R19 or P245/45R20 tires. Do not use tire chains, cables, or optional traction devices on rear tires. This could cause damage to the vehicle’s wheel house or body.
Town Car
Use only cable type chains offered by Ford Motor Company as an accessory or equivalent. Using SAE class “S” or other conventional link type chains may cause damage to the vehicle’s wheel house and/or body.
Transit Connect
Do not use any type of tire chains. This includes both conventional and cable type chains.