threeaces:
I went to Les Schwab to get a quote for a 19.5 tire/wheel setup and they recommended the Michelin XDS2 in a 245/70. My calculation showed a 126# vs 87# OEM vs 100# upgraded 18" per wheel weight. Good to hear that you don't notice a massive decrease in unloaded ride quality as that is a concern. My F350 does feel very stiff in the rear already. I have heard that the bump up to 19.5's can necessitate upgrading shocks to manage the un-sprung weight. I am leaning toward the 19.5 setup, but I have read that you can get the same tires in different load ratings (G or H) but it appears that Michelin only makes 245/70 in an H rating.
You and I have the same family setup, no surprise you settled on the AF 811 !
rider997:
Re: the upper stable loads, the dealer recommended the upper stableloads, but torklift recommended the lower stable loads so who knows. I have no rear sway bar so a Hellwig rear sway bar is on the list. Do you think supersprings are preferrable to timbrens?
Have you run 19.5" tires in the snow or did you decide to stick with 18" because of snow performance concerns ?