My 35" Load range "D" tires ride great. (315/70R17) They are Yokohama Geolandar AT/S's, and they seem like a pretty tough "D." There is only 35 psi in them, and the front tires don't squat at all. Night and day difference with the ride

 

hows your mileage though? When I went to a slightly larger (285/75) D range tire on my Ford, I lost 4mpg since max tire pressure was 40psi.

 

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Yeah, 35 psi. I got an hx-35 turbo at the same time, don't know if that helped or hurt, but the best i have gotten is 19 on a trip babying it.

 

that's not bad with those big tires with lower pressure though...