We’re really going down a rabbit hole on air density again, so I’m going to portion off the deeper discussion on that.
Generally rental karts will run better with colder air. However it largely depends on how they are jetted relative to the air density. Also, air density changes from highs to lows vary with climate.
In short, don’t assume… test\validate for a given kart\track.
Reviewing your video, you’re driving is pretty consistent. Your inputs are pretty large, but that’s because the kart has MASSIVE understeer. It’s pretty bad even for a rental kart.
Some of that understeer/push may be tires, but it also looks like rear is planted. You can also see caster dialled in there either. I think you’ll find that the push and heat is one of the reasons the fronts are getting a bit hot.
With no scope to adjust the kart, you are limited in what you can do to alleviate the kart’s opposition to turning…
- If there’s an adjustable seat, you can try moving it forward.
- If the seat isn’t adjustable adjustable, you can try putting something behind your back to move your body forward.
- You can sit on the front\top of the seat although that can be hard to keep a good posture with.
- I’m not sure “leaning outward” in the seat will help much with a kart that’s so heavy and planted, but you could try “thumping” the outside of the seat with your body as you turn in to help it rotate.
- For turns where you might ordinary just slow a bit, try coming in flat out and see if you can get a better balance with wheel input adjustments.
*Turning in slightly sooner may also help too, try that with power fully on, and or coasting.
Anyway, your driving at the high level is pretty decent, you’re aiming for good lines and using the width of the track to maintain momentum.