disallow wrote:I have done a chalk test. Even at 65psi they were fine. Was annoyed by the TPMS light though, it kicks in at 65psi.
Good to hear. I never would have thought you'd have issues with the TPMS & high psi. As an aside, it took me forever to find some chalk at a store. Chalk. You would think everyone would carry that, but I guess chalk is far too old school. Ended up with a bucket of super fat sidewalk chalk that leaves a huge mark in one swipe.
I've done some research, and based on my calculations, I've increased my unsprung weight by almost 100lbs. That is huge! So its understandable that I notice a decrease in FE.
Still seems like a large % in FE loss. I had to research my current tires since they are no longer made (Revo in a C load). 48 lbs, but the crappy BF Goodrich tires that came stock are a bit more challenging since they are manufactured as OEM, with less tread depth than the regular P rated tires (BFG Rugged Trails). At any rate, I'm pretty positive that I only went up about 50 lbs in unsprung weight. But, I have also had my highest mpg numbers using the heavier C rated tires, albeit I've been running higher pressures. Are you basing your % on mpg readouts, or hand calculated figures? The US models are tuned to a 265/75/16 tire in terms of speedo & cpu, which means those who run smaller tires will have better mpg numbers according to the Pathfinder since the on-board calculation is wrong.
Like I said, it only touches the mudflap, not the actual wheel well. The P tires list a 12mm tread depth on the website, vs the LT tires at 16mm. 4mm would be enough to cause the issue with the mudflap.
The tread depth doesn't have anything to do with it. A D tire has to be pretty much the same for every mfr, spec-wise. There are variations, but only by very small fractions of an inch. Not as bad as buying a men's medium shirt from Spam do not click, then one from spam do not click, and finding one fits like a tent & the other like a glove. The Goodyear MT in your tire size is 31.9", which is .2" larger (diameter) than your Duratrac(31.7"). The Silent armor is exactly 31.7" in both the LT and P versions.
Like you said, at least it is only the mudflap. That's an easy fix. I actually get some rubbing also, but that's only when off road with the wheel jammed completely up in the wheelwell at a full turn.
For my next tires in 3-4yrs, I am thinking about the REV02s, but P-rated tires which have an equivalent Load Rating of C. Hopefully that would lighten them up some, though the 10ply is probably good for making sure I don't get any nail holes in them....

I have to say I really like my Revos. But, I only have about ~31k or so on them and they pretty much need to go. I don't feel comfortable driving in snow with only 4-5/32 of tread. On the other hand, a guy on the FJ forum posted pics recently of his Duratracs at 30k
here. They look absolutely fantastic. He's probably at about 10/32" of remaining tread. I'm definitely going to try these out now after seeing his post yesterday. I've never had more than 35k out of a tire (AT or MT), so it would be a pleasant change if my tire would like that at 30k.