Should tire wear be even across the tire? Or is it normal to have more wear on the inside?
If it should be even, then this tire suggests too much negative caster camber, no?
(Camber is set to -1mm per side on the stand. I haven’t measured it when loaded on the ground.)
This is a bit of a non answer, but the stopwatch has final say. Generally the fastest setups tend to show uneven wear… which is counterintuitive.
Only worry about it if you have to conserve rubber.
Caster? Sounds like you are talking about camber
Yes! Correct. My mistake.
And is it under steering like a beast? It could have too much negative camber. Try less and see how it feels, but that graining looks like mine when I declare them dead
The graining suggests understeer, but the contact patch or how much tire you’re using is normal. Most of the time the tire will wear more on the inside.
In faster categories, you’ll find you need some negative camber to stabilise the back of the kart.
Less so in lower performance classes.
What sort of PSI are you using? As that graining looks more like an overheating issue
I’m struggling to wrap my head around negative v positive camber.
Some people say neg makes the steering lighter, reduces the contact patch and is good on new tyres and grippy/rubbered up tracks, others say the exact opposite.
Negative camber will lighten the steering on entry, but help the kart release better on exit because of the reduced scrub in the front end.
Trade off can be understeer or overheating your front tires too quickly.
That’s why negative is good for quali or cool temps; it works harder and the smaller contact patch heats up faster.
Every adjustment on the kart can work opposite if it’s intent if you are in a different part of the tuning window for your kart.
On a single club day event where your kart is working well on new tires, cold track with negative camber, would you be inclined to leave it for the final when the tires are now roughly 30 laps old and the track is rubbered up? Or would you tend to take out some of the neg?
I run more negative camber for short runs. If your run is longer, you’ll probably want to take some of the negative out or it’ll roast the front tires.
12 psi in humid weather of ~30C.
I’m racing with a tent team, and 12 psi was the recommended pressure (in LO206.)
