The Bearcat wheels I have on my 5er are rated for 3960#. Typically, a wheel rated for that kind of load is also rated for the higher pressures that the G614's rates for. The OEM tires on my 5er are 235/80R16, the G614's are 235/85R16. There is no difference in the tread width between the 2 tires, the only difference is the aspect ratio, 80% vs. 85%. That being said, if the rim width of 6" is OK for the OEM tire, it will be OK for the new GY's.
Dave & Amy
5 kids, 2 with 2 legs, 3 with 4 legs
2016 Columbus 385BH "No Worries II"
2016 F350 6.7L PSD CC Lariat DRW "Mistress II"
Ford factory puck system with 26.5k hitch