Emira track impressions

[OppositeLock]

Sway bars transfer some amount of compression from one side to the other. I retained the OEM sway bar.

The suspension now compresses less when cornering, so it moves the sway bar less, and the higher spring rate on the other side resists sway bar rotation more as well, so on net, relative to compression, I have reduced the influence of the sway bar, since its torsional rigidity, as a percentage of suspension stiffness, decreased.

The car felt perfectly nice on the track without changing it, and I don't mind body roll. My Elise had no sway bar in rear at all, a truly independent suspension. It leaned like the Tower of Pisa in turns, but it gripped great, and I just care about grip.

 

[seriously]

To music or not to music?

By default I don't play music on the track. But you know what? it sounds like fun. We have to run with windows open though so you can't really hear anything anyways

 

[Chriscpm]

Not here to rain on anyone's parade but playing loud music in the car on track has a few down sides to consider (which you may have already decided it's ok for you); it doesn't let you hear the tires as much so you're lacking one sensory input on how they're performing at or beyond the limits of grip, you're less likely to hear mechanical noises that could be a sign of a problem, and similarly you are losing a potential input of hearing another car closing in fast and perhaps they're not following your run group rules of point by or they have some sort of issue (skill issue or mechanical) that you might be able to avoid a collision with if you missed visual cues.

True. I don't run music much though. But that set I did. I ran one of my better laps, even with needing to pass. The music isn't that loud. I can hear everything. It does brig to the next level. Plus, the song is Red Barchetta - about racing a car. Lol!

 

[Chriscpm]

Tire wear is a huge compromise of a lot of factors. If you're still chewing at the edges but don't want to spend the money on hardware, you have a few options - change how you corner, change your tire pressures, and manage temperatures throughout a session.

Would you say more tire pressure to reduce side wear? These are the goodyears.

 

[OppositeLock]

Red Barchetta is also about someone driving a racing car illegally when driving is banned. Bad omen Rush is awesome, tho.

 

[OppositeLock]

Would you say more tire pressure to reduce side wear? These are the goodyears.

It does look like your tires were mildly under-inflated, yes.

 

[Chriscpm]

It does look like your tires were mildly under-inflated, yes.

Interesting. The pro coach wanted them much less than I had them. I start at 26/29. They heat to 35-38. They had them heating to 33-34.

My buddy did this the Emira was "so sticky" even with endurance 200 TW tires.

 

[Tracked Emira]

Would you say more tire pressure to reduce side wear? These are the goodyears.

 

[gcmak]

Would you say more tire pressure to reduce side wear? These are the goodyears.

Yes. In lieu of enough camber, tire wall stiffness, and roll stiffness, the two variables you can adjust for free are: tire pressure and your driving. Will you sacrifice lap times and grip? yep, it's all a compromise. Once you start to better understand more cause and effects, I think it begins to make a lot more sense.

 

[gcmak]

Interesting. The pro coach wanted them much less than I had them. I start at 26/29. They heat to 35-38. They had them heating to 33-34.

My buddy did this the Emira was "so sticky" even with endurance 200 TW tires.

Your coach also isn't paying for your consumables/tires. So yes lowering them - to a point - will likely give you some additional grip - but these are street tires, not track tires - so driving the piss out of them will lead to excessive and premature wear.

 

[OppositeLock]

It looks like they rolled over too much. I set my tire pressures with the help of a probe pyrometer and they rolled over less than yours. i can snap a picture later, as the scrub is still obvious. A pyrometer makes it obvious. Linear temperature gradient on tire = correct pressure. For me, this was very close to 35 PSI hot in all 4 tires. So, you weren't very far off, but you could have driven differently than me, on a different temperature day, etc. At these pressures, my temperatures were in the 160F range in the rear, and 130F range in the front.