How rigid is payload number
OK the Mrs and I have chosen a TT, Rockwood 8311SS. It is within my tow limit, the question I have is the payload number. How critical is it to be below your payload number? I have a Ram 1500, w...
Forum Discussion
Larry, I think you are right and I misspoke. FMVSS standards (I googled them) are for crash safety and crash avoidance. It has NOTHING to do with GVWR or axle ratings.
I forget what standard applies to vehicles to determine ratings. For some reason I thought FMVSS determined that.
The only thing applicable to this argument in FMVSS is rule 110 about weight rating of tires and rims. Interestingly enough, vehicles rated over 10,000 lbs aren't bound to these standards. It states that for vehicles under 10,000 lbs that use "car tires" can only be rated for 90% of the combined tire rating. That helps lead towards Toyota rating my axles at 8250 lbs... which is roughly 90% of the combined weight rating of the stock OEM crappy car tires that come on a stock Tundra.
I'm not an engineer, I don't deal with FMVSS ratings on a daily basis.
I still don't think that you have any supporting documents for your argument. I don't really need to see any, because I think that it is a moot point in this case. I think the OP will find himself over his payload by a larger margin than he anticipated and will find the find unacceptable. While I really believe there is some wiggle room in those numbers, I don't encourage people to drive over their ratings AND I think that the OP's numbers will be too far over his ratings for comfort.
I forget what standard applies to vehicles to determine ratings. For some reason I thought FMVSS determined that.
The only thing applicable to this argument in FMVSS is rule 110 about weight rating of tires and rims. Interestingly enough, vehicles rated over 10,000 lbs aren't bound to these standards. It states that for vehicles under 10,000 lbs that use "car tires" can only be rated for 90% of the combined tire rating. That helps lead towards Toyota rating my axles at 8250 lbs... which is roughly 90% of the combined weight rating of the stock OEM crappy car tires that come on a stock Tundra.
I'm not an engineer, I don't deal with FMVSS ratings on a daily basis.
I still don't think that you have any supporting documents for your argument. I don't really need to see any, because I think that it is a moot point in this case. I think the OP will find himself over his payload by a larger margin than he anticipated and will find the find unacceptable. While I really believe there is some wiggle room in those numbers, I don't encourage people to drive over their ratings AND I think that the OP's numbers will be too far over his ratings for comfort.
