Tire Size Increase/Rim Width
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Freshman User
Joined: Feb 2007
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From: Riverton, Wyoming
Tire Size Increase/Rim Width
I am replacing my tires today and want to increase the siize from 265/75/16
(e rated) to 285/75/16 (d rated). My rims are stock and 16X7 wide. I own an '02 f350 PSD cc sb. My concern is that the larger 285 have an "approved" rim width of 7.5- 9, but the "measured" rim width says 8. The 265 is 7-8 approved and 7.5 measured. My questions are am I going to be allright putting the larger tire on, and what is the difference between approved width and measured width and does 1/2 and inch in rim width make a difference? I ahve noticed that several people on the forum have 285/75/16 iress, I am guessing that mounting the larger tire must be ok. Thanks in advance. Aaron
(e rated) to 285/75/16 (d rated). My rims are stock and 16X7 wide. I own an '02 f350 PSD cc sb. My concern is that the larger 285 have an "approved" rim width of 7.5- 9, but the "measured" rim width says 8. The 265 is 7-8 approved and 7.5 measured. My questions are am I going to be allright putting the larger tire on, and what is the difference between approved width and measured width and does 1/2 and inch in rim width make a difference? I ahve noticed that several people on the forum have 285/75/16 iress, I am guessing that mounting the larger tire must be ok. Thanks in advance. Aaron
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Joined: Jul 2003
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From: Newport, WA
FWIW, I'm running 285/75/16 BFG A/T KO's on stock rims and I get some feathering/cupping in the inside edge of the tires. I've been told its from running the wider tire on a stock rim, but also told that its just because these particular tires want to be rotated a lot. Keep an eye on your new tires to make sure they don't start wearing funny, because as expensive as tires are you want them to stay in good shape.
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From: Riverton, Wyoming
Cooper Discover ST, which is the tire that I am replacing. I just got 55,000 miles on the last set, I thought that was pretty good for a 1 ton truck, I also never got stuck, or slid off a road, came close though.
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