New shoes for the RR

[Putz173]

Method 705 in 35mm, and fallen at4

amazing how much bigger a standard 285/70-17 looks than the oem spec ko3

.5 taller and inch wider, sits flush with flares

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[Dracena]

I always like those 705s! Never understood the crowd who complained about the bolt (6 count) vs spoke (10 = 5 multiplier) count being an issue. Did you stick with 285/70-17 on the AT4? Are you sure you're getting 0.5" diameter and a full 1" width on the tires, vs the visual impact of the wheels being 20mm further out?

 

[Putz173]

According to tirerack that’s the measurement difference between the ko3 oem ford spec and the falken

Same size yes, between little wider tread patch and wheel it looks like alot wider tire

 

[Dracena]

RR OEM comes with BFG K03 in 285/75r17 load rating 116/113/C speed rating S. This is the one:

https://www.tirerack.com/tires/tires.jsp?tireMake=BFGoodrich&tireModel=All-Terrain+T/A+KO3&sidewall=Raised White Letter&partnum=87SR7KO3RWL&tab=Sizes

Both are actually spec'ed at ~32.8" ... 285mm * 70% = 199.5mm sidewall / 25.4 = 7.85" * 2 = 15.7 sidewalls + 17 rim diameter = 32.71" diameter. A manufacturer may provide the exact measurement of 32.7" or 32.8" depending on rounding, some round it to 33" nominal. Diameter may also vary based on PSI and C vs E-load rating as stiffer sidewall = less ballooning.

285mm width / 25.4 = 11.2". Most report 11.5", and may achieve that with side tread, misc design variances, etc. The BFG KO3 and Falken AT4W are both reported at 11.5" The only way you would get +1" width is running 305 or 315 width.

Best way to confirm is measure by hand since they're both on hand, but the KO3 will measure taller since they aren't getting squished by the truck weight. Check your PSI on the new tires as well. Tire shops always seem to over-inflate.

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