Jan 15 2021, 04:38 PM
QUOTE(autodriver @ Jan 15 2021, 09:46 AM)
Manufacturer specification is based on optimum weight but it does not mention that we cannot put higher or lower PSI depend on situation. And for soft and hard sidewall technically suit for different type of users. But in Malaysia there are many people only afford to buy comfort tyre but they are driving in "sport", or they use sport car but only afford to buy budget comfort tyre. That is reason why it is recommended to put higher PSI if they want to drive aggressive in corner.
And you mention soft sidewall driving hard in corner will have more body roll and feel unsafe, that might not be correct. Some comfort tyres come with rim guard which can help to hold corner better. For example if a comfort tyre comes with rim guard and profile is 55 series, with higher PSI it can help to provide better handling and less body roll. What I mean of higher inflation is never mean for the tyre profile higher than 55, such as 60 or above because the higher PSI won't help much and these kind of tyres usually without rim guard.
" that is why manufactures have uhp/high performance 95w and touring/comfort 95w". You made a mistake assumption where UHP never mean of specific pattern or product, it is a term of tyre sizes. Which mean touring/comfort tyre can also be UHP like 215/45R17 is called UHP regardless it is sport or comfort tyre. In tyre industry people classify touring, sport and premium sport etc. They never said which pattern or product is UHP.
Btw I don't think I should continue to argue if you think yourself is expert who work in tyre or automotive industry.
lol... what is your qualification and role anyway? I do happened to have a diploma in auto engineering, a degree in mechanical engineering, and donkey years as chartered engineer now retired... so I do know a bit more to be dangerous... while I'm no tyre expert but from our discussions I know you are far from one...And you mention soft sidewall driving hard in corner will have more body roll and feel unsafe, that might not be correct. Some comfort tyres come with rim guard which can help to hold corner better. For example if a comfort tyre comes with rim guard and profile is 55 series, with higher PSI it can help to provide better handling and less body roll. What I mean of higher inflation is never mean for the tyre profile higher than 55, such as 60 or above because the higher PSI won't help much and these kind of tyres usually without rim guard.
" that is why manufactures have uhp/high performance 95w and touring/comfort 95w". You made a mistake assumption where UHP never mean of specific pattern or product, it is a term of tyre sizes. Which mean touring/comfort tyre can also be UHP like 215/45R17 is called UHP regardless it is sport or comfort tyre. In tyre industry people classify touring, sport and premium sport etc. They never said which pattern or product is UHP.
Btw I don't think I should continue to argue if you think yourself is expert who work in tyre or automotive industry.
tbh your arguments are really incoherent, jumping everywhere...I'm just trying to point out that your assertion that soft sidewall tyres are not suitable for heavy cars is wrong... btw ps4 has a moderately soft sidewall as uhp tyre goes... and rim guards or rim protectors is just that, to protect the rims...low profile tyres have it because easy to hit the curb whilst high profile don't because it's high enough to not need it...they don't help at all in handling or body roll...
anyways my initial thinking was maybe I can help correct your misunderstandings but obviously you are very smart and don't need any help... cheers
This post has been edited by dwRK: Jan 15 2021, 06:16 PM
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