Revised GVWR after axle upgrade??
We have a 2014 TT that came with two 3,500 lb axles/springs and very little payload capacity. By the scales the axle/springs run at 96% of capacity at trip weight and within the GVWR. The springs w...
Forum Discussion
westend wrote:goducks10 wrote:Assuming a mfg builds to a certain engineering design, i.e. doesn't put a very heavy frame on a weak suspension but designs for all parts to meet a criteria.westend wrote:
The weight ratings are calculated from the weakest link in the chain. In your case, that would be the frame and the weight it was designed to carry. Since you haven't upgraded the frame, the "official" GVWR remains the same. The practical limit of carrying is not going to be that much greater.
You don't know that for sure. How do you know that it's not his springs and tires? Thats why a call to Lippert is the real answer. No one really knows. It'a all speculation at this point.
If he has upgraded the suspension, what is then the limiting part of the puzzle?
I hear ya, just thinking that maybe it's his axles and tires. An 8" frame is pretty robust. I have an 8" frame on my 5th wheel with 11,400 for GVWR. Running 5200 lb axles and 15" 225 tires. On my previous Tt I had an 8" frame, 4400 lb axles and 15" 225 tires. It had an 8400lb GVWR. Both GVWR were tied into the axle rating.
If the OP did nothing more than upgrade his axles and tires then he could comfortably haul at the TT's GVWR with out concern. I'm not sure if he's looking to carry way more or carry the OEM weight with a cushion.
