Tire Pressure

[Wine dude]

Going to a charity event at Homestead Speedway
Laps on the oval behind pace car speeds 100 maybe a bit more
Would you change your tire pressure?
Might do 50 laps, not all at once, maybe 10 at a time.
Run in sport mode or track?

Sponsored

 

[key01]

I run 30 on the street and probably wouldn’t change. I guess it depends where your pressures are at now. I say Sport Mode. Have a blast! I would love to do that.

 

[Lurker_350]

......
Run in sport mode or track?

I think some people have had stability/traction control MIL issues on banked ovals. @Tomster?

 

[JAJ]

Going to a charity event at Homestead Speedway
Laps on the oval behind pace car speeds 100 maybe a bit more
Would you change your tire pressure?
Might do 50 laps, not all at once, maybe 10 at a time.
Run in sport mode or track?

There's no reason not to follow the FP recommendations for tire pressure, which is to start with 28 PSI cold. Your dash display will tell you what the hot pressures are - most people say that 32 PSI hot delivers the best grip with either of the Michelin options so you can drop a pound or two if you need to between sessions.

Sport mode is a good choice - if you're lead-follow it'll take the strain off the rear brakes - AdvanceTrak modulates the rear brakes to keep the car in line and the faster you go the harder they work - while keeping the nannies mostly on.

 

[Austinj427]

There's no reason not to follow the FP recommendations for tire pressure, which is to start with 28 PSI cold. Your dash display will tell you what the hot pressures are - most people say that 32 PSI hot delivers the best grip with either of the Michelin options so you can drop a pound or two if you need to between sessions.

Sport mode is a good choice - if you're lead-follow it'll take the strain off the rear brakes - AdvanceTrak modulates the rear brakes to keep the car in line and the faster you go the harder they work - while keeping the nannies mostly on.

This is about where I have ended off.

I don't know how much heat you will generate on a circle track, especially a banked one, but start at 29 cold and see where they are after a session.

 

[Tomster]

I think some people have had stability/traction control MIL issues on banked ovals. @Tomster?

More so in my old '16 track pack. The banks at Daytona would throw the whole stability augmentation system out as well as the traction control. Didn't happen hardly at all in the R

 

[Tomster]

Going to a charity event at Homestead Speedway
Laps on the oval behind pace car speeds 100 maybe a bit more
Would you change your tire pressure?
Might do 50 laps, not all at once, maybe 10 at a time.
Run in sport mode or track?

It depends on ambient conditions. 28 PSI is about where you would start if you are going to go balls out and run near top speeds. If I wasn't going to go over 100, I probably wouldn't change my pressures from street stock. Im not sure which tires you are running, but I would find out the hot target pressure and not exceed that. Keep your TPMS page up and just keep an eye on it and adjust as necessary between sessions.

 

[honeybadger]

Speeds of 100 shouldn't be stressing things too much. Starting at 28 might be a bit low.

That said, I've run the Cup2s full out at 27psi all the way up to 36. Above 34 they get slick near the limit, below 30 grip is plentiful, but the turn in is a bit unresponsive. I've found 32 HOT (meaning they never go higher), to be best. This usually means the beginning of my session, I'm rolling out with them near 26 if they've had time to cool off - 29 if they haven't.

Given that this sounds like a lead follow, I'd start at 30 unless it's ridiculously hot or you're confident you'll stress things with higher speeds. You can adjust tire pressures down as needed throughout the event. I am usually modifying my pressures after every session.

 

[Wine dude]

Stock pilot super sport tires
Full Steeda suspension upgrade with FP springs and DSC controller
Etc

Sponsored