Summary

00:00 - Can you repeat the tyre temperature distribution troubleshoot? Yeah no problem, so all I'm talking about there is if we're looking at, let's say this is the tyre that's on the car that's come into the pit lane, so we can use that tyre temperature distribution to understand both our wheel alignment and our tyre pressure settings.
00:17 So let's say we've got a pyrometer and the car's come into the pit lane, we've gone inside, middle, outside on our tyre.
00:24 Now let's say that the two outside edges are let's say 10° hotter than the inside.
00:28 Straight away that's telling me the most likely thing that's going on there is that the tyre is under inflated because the two outside edges are the hottest, that means they're taking too much load and what's happening there, as with under inflated tyres, the outside structure of the side wall is tending to prop up the rest of the structure of the tyre and that's why you're getting extra energy input onto the outside edges.
00:47 So straight away that tells me you need to boost your tyre pressure.
00:50 If you've got the opposite thing and you've got higher temperature in the centre and colder on the outside, that's the opposite and means you're over inflated, you're over working the centre area of the tread and you're not allowing the full contact patch to come into contact with the road so that means you need to come down in your pressures.
01:05 Now let's say you're hotter on the inside to the outside, if you're in that 10 to 15°C range, that's what I would call generally the sweet spot for most track day or circuit racing or track day situations, that's generally what you want, you do want that inside edge working a bit harder so that's not a problem, that's ideally where you're normally aiming for.
01:21 If you've got say 20, 30° on the inside edge higher, you've either got too much camber or too much toe out, so those are the two things you can try to fix to get rid of that temperature distribution.
01:32 Alternatively if it's the outside edge, you've got the opposite, you've either got not enough static camber, or dynamic camber, or too much toe in and it's scrubbing that outside edge across the front edge, sorry it's scrubbing the outside edge across the road.
01:44 The other thing that can be doing on as well is if you have too much roll in your car, if the car's rolling too much, either from the springs are too soft or the anti roll bars aren't stiff enough, or your roll centres are too low then you're going to end up just rolling onto the outside edge.
01:58 If you don't have enough camber recovery built into your geometry then you're going to end up overloading the outside edge of the tyre.
02:03 So hopefully that was a decent recap for you there.
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