Though the years, Newells got heavier. As the weight increased, the tires became the limiting factor in the Gross Vehicle Weight Rating. Larger wheels and tires were needed to handle the greater weight.
My 1992 has 11R24.5 tires. Even at that, an H rated tire is required to keep the tires load capacity from being less than the axle weight rating. My GAWR (gross axle weight ratings) are steer: 13,200#, drive 22,000#, tag 10,000#. My H rated Bridgestone R280 11R24.5 tires are rated at 7,160 single and 6,610 in dual configuration. The G rated tire (only sheet I have is for a Goodyear G357) is 6,430# single and 6,000# in dual configuration. I would be OK with the G rated tires on the drive and tag axles but not on the steering axle. As a comparison, the G357 11R22.5 G rated tires are 6,175# single and 5,750# dual.
Since load is rarely distributed equally between the right side and the left side of a coach, it is always good to have extra tire capacity.
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