rear tyre pressure

[PMK]

What I posted, was said " in jest "..... Yes I'm a firm believer in " tire science " .... I'm also a believer in " is this absolutely necessary " to achieve a purpose .... It's like the Covid virus thing ..... Millions of people have been tested, for the folks who didn't have it, What does it mean ? ... it means they didn't have it at the time of the test .... but later that day they could have gotten it , or maybe the next day etc. It really only matters for those who did test " positive " - they may or may not actually need treatment..... What I've posted about " tire pressure " is for average, everyday guidelines to folks who have switched to Auto tires. I would not pertain to RACING vehicles used only for Racing situations. One criteria doesn't need to match All criteria. ... Peter is very technical in what He says, and if you needed EVERY ounce of performance that it provides, it is important .... but everyone doesn't need every ounce, not me nor most others here. .... like balancing front tire psi's, to me it can't be done UNLESS you use a DUAL fill hose set-up..... I'll bet there are folks here who will WASTE ( imho ) a lot of time trying to achieve perfect balance without using a Dual fill Hose - if the left and right tire arn't exactly the same, what will happen ? ... practically speaking - nothing !!!. Unless they are Vastly different. My point to what I've said is, achieving Perfection should be a Goal, but less than Perfection ( reasonably ) can be good enough for most applications ...... Mike :thumbup:

Avoiding bringing any political or COVID remarks that may have this topic shutdown. We all have our own opinions regarding politics and COVID and this is not the place for it.

 

[BLUEKNIGHT911]

Your post regarding having a bowel movement, humidity, and recalibration added nothing to further this topic along. My reply mentioning real tire science was in jest too, though you answered with a serious reply.

There is good and valuable information learned from Peters posts. He stated that ambient conditions will alter the required cold tire pressure setting in order to achieve the 4 psi change riders are looking for. With that said by Peter, the suggestion of 16 to 18 psi would be, or could be considered somewhat specific for certain ambient conditions, payload weight, vehicle weight and road surface induced heat into the tires.

Seems as though the suggestion to tell others to run 16 to 18 psi without actually verifying they obtain an accurate 4 psi increase when the tire reaches stabilized hot temp could even be dangerous for some owners. 16 to 18 psi may be ideal for your weight, your vehicles weight, the load in the trunks, your road surface, the tires you choose to roll on, and your ambient conditions. Outside of that, a person could be overinflated to possibly hydroplane on Bug Spit, or be underinflated, and overheat their tires.

This tire science can be very interesting. More intriguing to add more to the topic is when is a using a tire pyrometer or even a non contact temp gun needed. And will the temp readings be even across the tires tread surface at the correct psi, knowing the Spyders run essentially 0.0 degrees of camber?

Well I guess you missed my point ...... and some people can find political meanings in everything any one says .... I had NO political agenda ..... Covid just happens to a current fact of life ...... Mike :thumbup:

 

[PMK]

Well I guess you missed my point ...... and some people can find political meanings in everything any one says .... I had NO political agenda ..... Covid just happens to a current fact of life ...... Mike :thumbup:

Well, actually, no I did not miss any point you made, unless it was covertly and stealthy within you emojis.

I get it, you have had some type of formal training regarding tires. I find that excellent, not sure what certification or qualifications it allows you. Your training apparently has you schooled to use 4 psi from cold to hot, I get that too.

Bringing COVID into this topic was uncalled for. Trained in tires or not, you have no way of knowing if anyone here has been seriously infected or may have lost a loved one or friend from COVID. In my opinion, there are many things you don’t get and you owe not me, but this group and those reading this topic a sincere apology.

 

[CopperSpyder]

Thanks for your replies, I didn't expect such technical answers. I just thought people would just give me a figure and I would use that as a base point. It seems somewhere between 20 psi and 25 psi would be a good starting point. Many thanks again for your time and experience in answering my question.

Thanks! AdyB I'll close this thread for you.