Maybe on launch when all the weight transfer goes towards the back, so the aim is to maintain a solid rear end to keep the front end down, hence allowing for greater front wheel grip. One way is obviously to have a firm suspension in the rear, so I assume having sidewalls that don't flex prevents the rear wheels from deforming too much, thus keeping front end down.
I'm sure there's a term for this but I don't know what it is lol.
Edit: This is all a stab in the dark until someone confirms hahaha. Just trying to reason. But yes, on circuit I would think sidewall flex would have a significantly greater influence.
motul 300v 5w30 is $$$$$. autobarn stocks motul 5w40 8100 for around $75, not bad. but im going to try oem ultra 5w30 for my next service and also cheap too.
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