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Hello all I own a 05 f-350 superduty, (Drw) But looking to put some new tires on. Wondering what the largest size I could put on with no problems. Current tire size is 245/70/17
The superduty section might be a better place to post this. I'm running 305/65/18 on my F150 and that is as big as you can go without a lift or leveling kit.
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First answer is it depends on the year, because the SRW 99-03 and the 04- current have a different suspension in front and the newer guys seem to squeeze a little more in there before they rub.
BUT.
You have a dually. Theres a spacing between the two rear tires that's going to have to be maintained. I dont have a dually, so I can't say a specific size, I'm sure you can fit height wise more than you have, probably up to a 33", but that affects the tread width as well, and you could end up with your rear tires against each other.
My 05 has 17 X 7.5" wheels with 265 70 17 as stock size seems the biggest tire for that rim width is 285 70 17. I Picked -up some Goodyear silent armour tires on E-bay but havn't recieved them yet. Hope to install them soon.