Best tyre pressures for road and track

[Speedy Emira]

For those of you that have already been tracking your Emira I’d be interested to see what your views are for the best road and track pressures.

I found an interesting video explaining some of the reasons for having different pressures for specific set ups and models:

 

[Tokion]

For those of you that have already been tracking your Emira I’d be interested to see what your views are for the best road and track pressures.

I found an interesting video explaining some of the reasons for having different pressures for specific set ups and models:

Great explanation of the importance of correct tire pressure by Robert Mitchel, owner of APEX at the Nürburgring.

 

[Speedy Emira]

Great explanation of the importance of correct tire pressure by Robert Mitchel, owner of APEX at the Nürburgring.

I agree and there are a lot of different views on YouTube which could potentially make you choose a tyre damaging option. Everyone wants better handling but it’s equally important to not destroy the tyres because these sizes ain’t cheap.

 

[KJD]

A good rule-of-thumb is to take the manufacturer recommended cold road pressures and use them as the hot track pressures.

Nothing he said in that video suggests that this isn’t at least a good starting point.

 

[2Lotus]

I might have missed this but when he's talking about 2.1 - 2.4 bars is that hot or cold temp's?

 

[Julian73]

A good rule-of-thumb is to take the manufacturer recommended cold road pressures and use them as the hot track pressures.

Nothing he said in that video suggests that this isn’t at least a good starting point.

This has been Lotus recommendation on the Evora models. In fact their owners manual said to start at the street cold pressure setting, warm up tires with a few laps and then bleed back down.

 

[Eagle7]

I might have missed this but when he's talking about 2.1 - 2.4 bars is that hot or cold temp's?

Like he said, there are multiple factors involved including vehicle weight, engine location, type of tire, etc. It's an excellent video. I believe for the vehicle he was referring to, 2.1 was the cold temperature (about 30 psi) and 2.4 (about 35 psi) was the desired hot temperature. He also talked about an excellent observation of one side of a parked car being in the sun, and the other side in shadow. The sun side heats up the tires on that side only and that skews the performance characteristics of the tires, so don't set all the tires the same pressure until they've all warmed up. This of course requires frequent checking (most of this was related to track use) but there's some good info for using your car on the street to get the best performance and life out of your tires.

 

[scc.131.fe]

Reviving to see if anyone on Sport+Goodyear has found a preferred pressure setting for street use that's more than 1-2 psi different than user manual?

 

[KAR120C]

Reviving to see if anyone on Sport+Goodyear has found a preferred pressure setting for street use that's more than 1-2 psi different than user manual?

I’ve been playing around with pressures, hitting the same roads to reduce variables. My main complaint was understeer in hard cornering. I prefer at least some mild oversteer. The last 2 days I’ve run 2 lbs under front and back. The backs heat up more so eventually it goes to about a 4 lb F/R difference. This feels pretty good and the tire shoulders look good. I’m going to run like this for awhile.

 

[Speedy Emira]

I’ve been playing around with pressures, hitting the same roads to reduce variables. My main complaint was understeer in hard cornering. I prefer at least some mild oversteer. The last 2 days I’ve run 2 lbs under front and back. The backs heat up more so eventually it goes to about a 4 lb F/R difference. This feels pretty good and the tire shoulders look good. I’m going to run like this for awhile.

Yesterday I was out driving and after a few miles of twisty back roads noticed my back near side tyre was slightly higher than the left even though I did the same trip in reverse.
I do fancy getting the Cup 2 Connects when my current ones need changing.

 

[seriously]

Having active psi monitors has been eye opening. I had no idea psi increased so much and was so variable depending on external temps and road temp.

On the same drive in hot open sun roads my tires were +5-6 psi. Then same run shaded mountain roads +2-3.

Any additional thoughts on ideal psi? After bleeding from a hot drive my tires heat up to 31/34 in normal street driving. Trying to figure out best psi for wear and street driving vs best psi for aggressive/track driving.