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Well, I believe stock wheels are 16 x 7.5" with 4 1/4" backspace, not sure of the offset, but guessing zero.
The Rockstars's are 20 x 8.5 with about 5 1/8" backspace. They also have a +10mm offset. They will be about 7/8" further in than stock.
Something in the -15mm offset would be real close to stock, backspace wise, though they would stick out a little more than stock because they are a wider wheel.
I also noted that they have a weight rating of 2200lbs/each. Seems a little light even for a 2wd truck IMO.
As for tires, a 275/55/20 is real close to stock, not sure if anyone makes a tire that size or not.
Well, I believe stock wheels are 16 x 7.5" with 4 1/4" backspace, not sure of the offset, but guessing zero.
The Rockstars's are 20 x 8.5 with about 5 1/8" backspace. They also have a +10mm offset. They will be about 7/8" further in than stock.
Something in the -15mm offset would be real close to stock, backspace wise, though they would stick out a little more than stock because they are a wider wheel.
I also noted that they have a weight rating of 2200lbs/each. Seems a little light even for a 2wd truck IMO.
As for tires, a 275/55/20 is real close to stock, not sure if anyone makes a tire that size or not.
Here is how "offset" works. Not really a usefull number. I think the most use it has it how much it will affect your wheel bearing situation. Tell you were the load will be.
Im pretty sure the factory wheels are 16x7's, and I think the backspacing is 4.25. The center line is at 3.5", and the wheel mounting surface is at 4.25. Subtract the two, and you get a positive offset of .75" or 19.05 mm.
The wheels you are looking at are 20 x 8.5, have the backspacing of 5.14". The center line of 4.25", and the wheel mounting surface is at 5.14" Subtract the two, and you get a positive offset of .89" or 22.606 mm. The same width tire, on that rim, should stick in the wheel well .14" more, or 3.556mm.