Looking for tire knowledge

[JumpMan]

I want to replace the stock 255/70/17 tires with 285/70/17 KO3s. Anyone know if 285’s will fit on the stock wheels? Or do I need new wheels to run KO3s?

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[Ron Quixote]

I’m pretty sure 285s will rub without either a lift or some crazy backspacing.

 

[JumpMan]

I’m pretty sure 285s will rub without either a lift or some crazy backspacing.

yeah, that’s what I figured. 265s don’t make a huge difference, so I might look at 275s.

I have a set of RC 2.5” spacers to level out the truck, just haven’t put them on. Might have to put those in first, then look at new tires.

 

[bigb]

yeah, that’s what I figured. 265s don’t make a huge difference, so I might look at 275s.

I have a set of RC 2.5” spacers to level out the truck, just haven’t put them on. Might have to put those in first, then look at new tires.

Take a look at your upper control arm, it barely clears the stock wheel and tire. For 285s you would need wheel spacers or a different offset wheel. Have you thought about some taller tires but staying with 255 or 265s? Or are you more after appearance vs functionality?

 

[RLE55]

Unfortunately, the stock OEM wheels on the non-RR trucks have terrible offset (+55mm)
Here's a nice wheel offset calculator to help in decisions. A 275 might work with OEM wheels.
https://tiresize.com/wheel-offset-calculator/

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