CHD Dad wrote:
I dont use the temp reading on my TPMS, it was a byproduct of the model I bought and seems to be common in all aftermarket wireless TPMS systems. I do use the pressure reading and if that pressure reading is going up, so is the internal temp.
As I stated twice before, I bought the TPMS to alert me of a tire failure - period. I wanted to know as quickly as possible if a tire was losing pressure. What I was surprised about was the relatively small change in pressure increasing (due to heat) when driving from 60mph up to 70mph. That is why I started this thread. I never thought about it the other way around, if one tire is going up much higher than the others there could be a tire, brake or wheel bearing problem so I appreciate that tip.
myredracer - you and that article linked want to claim that the tire speed rating should be considered the redline of a vehicle. What engineer in their right mind would design or sign off on something that would be run at 100% of its capability for the majority of its life?! That would be like Ford setting the redline for your V10 engine to wherever it sits when driving 65mph down the road. That is a safe and reasonable speed and sure you can exceed it slightly if you wanted to pass somebody but the entire time you are driving down the highway just go ahead and run it at redline...
I would suggest
thoroughly reading through the information in
RVtiresafety.com. The contents are written by a tire engineer with extensive experience with tires and tire failures. There's a wealth of RV tire information there. Of interest is that the author states that most of the failures in ST tires have little to do with where they were made and other than punctures from road debris and physical damage, it's mostly got to do with mistreatment, of which driving over the tire's rated speed is one. If still in doubt after studying the blog's information, I suggest that you contact the author for clarifications. No-one is saying to NEVER exceed 65mph. Accelerating to just to pass is not the problem, frequent towing above 65 is.
I know that in some areas of the US, the posted speed
limits (more like a "suggested" limit,lol) are well above 65 and towing at max. 65 is not easy and maybe that's a case for going to LT tires. Personally, I don't like towing much above 65mph as it doesn't feel comfortable. Even when the posted limit is 60 for trucks (Wa.), most of the others on the road pass when I'm going 65 in the slow lane and that's fine by me.
kellertx5er wrote:
While this would appear that Goodyear condones running at up to 75 mph with increased pressure, they do NOT state that ST tires are rated for anything above 65 mph. It is merely a recommendation.
I agree and should have included that. Maybe if you had a planned higher speed run coming up on a particular day, you might air up to 75 psi (Marathons) but I wouldn't want to do this very often. When I can (like on a steady flat stretch), I set the CC at max. 65 and enjoy the drive. On slower routes, I'll set the CC at 60 to conserve fuel. We went with Marathons this time on our new TT and with the appropriate treatment, I plan to have them last for quite a while.
