Hello all. I've searched it seems endlessly (including here). Has anyone found or received anything definitive from Ford on what the max tread difference that is allowed or safe with the SHO?
I've found 3%, 2/32nd, 3/32, 1/2 inch circumference, even an article supposedly for PI that states Ford's AWD can handle new tire with older tires. Also found avoid "major difference" (whatever that is). Dealer were I bought my car said "anything greater than 1/32, replace all" which seems bogus. Another dealer said he has replaced one tire on his Explorer Sport without issue--just replace the one if same brand/model/size. Our manual doesn't say anything definitive, which sort of leads me to believe there really isn't a requirement.
Boils down to I have a screw in the edge of the tread of a set of DWS06s about 6 months old. Of course I could: 1) replace all to be absolutely safe (very expensive), 2) replace 2 on same axle (but doesn't that become problematic once rotating tires around), 3) replace the one tire and just go with the difference or maybe find somewhere to 'shave' it, but that seems hard to find.
I need to get the tread depth measured, but I'm thinking I'm at 8 or 9/32 from the new 10/32 depth. I might even get Continental to replace the damaged one with their warranty.