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Old 09-06-2010, 10:08 AM   #29
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Originally Posted by denochs View Post
Mike,

My front axle GAWR is almost identical to yours. That's why it was not a concern or part of this discussion. However, my rear tandem axle has a GAWR of 20,000 and the tag axle is 10,000, totaling 30,000. So, as Ecker pointed out "Federal regulations at present do require that maximum tire rating match maximum axle rating. the sum of the maximum load ratings of the tires fitted to an axle shall be not less than the gross axle weight rating (GAWR) of the axle system as specified on the vehicle's certification label required by 49 CFR part 567".

All that being said, 6 G rated tires would give an owner much more than the GAWR in this particular instance. Does that mean the MH mfg & tire dealers are just trying to sell more than required? I don't know enough about tires to answer that question. Hopefully, someone else does.

One thing for sure, with H rated tires I can run less air pressure to get a better ride.

Dave
Dave,
I think the bottom line is, they want to put the same tire on all around, and the front axle requires the H, so that's what you get. This also allows rotating your tires, though very few owners bother to do that. The main reason being (for me at least) that my tires are likely to age out long before they wear out.

Mike
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Old 09-13-2010, 05:52 AM   #30
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Quote:
Originally Posted by Crabby Mike View Post
Dave,
I think the bottom line is, they want to put the same tire on all around, and the front axle requires the H, so that's what you get. This also allows rotating your tires, though very few owners bother to do that. The main reason being (for me at least) that my tires are likely to age out long before they wear out.

Mike
I think you are at the heart of why mfgs put the same tires on all axles and why every owner that has weighed in on this thread recommends the same.

The tires that came off our rig had more than half the tread life on them left. The only reason for changing them was due to age. And they, like most have never been rotated. To rotate the tires on a MH we would have to have them remounted and balanced due to different rims on each axle.

My conclusion is that H rated tires are over kill for the rear of our coach and is likely the case for others that have tag axles. In the future, if cost, comfort, or availability become an issue with replacement tires, I will go with the G rated.

Dave
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