Toyo RR tire pressures
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02-27-2017, 04:24 PM
#9
Instructor
Funny thread... To add more color on why the tire pressures are between 36-38 for me is heat management. I will run 36 degrees on tracks that allow the tires to cool on straights and 38 on very busy tracks with lots of steering input.
37 and 38 psi may not be the fastest setup for one lap but provides consistent laps for 30 min sprint races and the tire never feels greasy. When you drop down below 36 it's good for qualifying but after 10 mins the grip is reduced substantially.
So the best answer is as usual - it depends on how long you're running on it.
Hopefully helpful.
37 and 38 psi may not be the fastest setup for one lap but provides consistent laps for 30 min sprint races and the tire never feels greasy. When you drop down below 36 it's good for qualifying but after 10 mins the grip is reduced substantially.
So the best answer is as usual - it depends on how long you're running on it.
Hopefully helpful.
02-27-2017, 06:27 PM
#10
Chris holds the SPB track records at Sebring and Daytona (and probably some others), so if it works for him, he has the credentials to prove it.
From my way of thinking, once the tire hits 36 psi, I start to notice a difference from the apex out. If you've ever seen in-car video of one of Chris's fast laps, he rolls an incredible amount of speed into the turn...then corrects and corrects and corrects from the apex out. He has fast hands and he's a great driver. I am not. When I get the Toyo RR to 36+ psi, it feels slippery. The way Chris drives, it probably feels perfect.
He's fast, but he drives on a razor's edge. I'm slower because I like to feel the car settled beneath me. So, again...your choice...do you want to be fast or slow. If you want to drive the RRs at 36-38 psi, you better have fast hands.
From my way of thinking, once the tire hits 36 psi, I start to notice a difference from the apex out. If you've ever seen in-car video of one of Chris's fast laps, he rolls an incredible amount of speed into the turn...then corrects and corrects and corrects from the apex out. He has fast hands and he's a great driver. I am not. When I get the Toyo RR to 36+ psi, it feels slippery. The way Chris drives, it probably feels perfect.
He's fast, but he drives on a razor's edge. I'm slower because I like to feel the car settled beneath me. So, again...your choice...do you want to be fast or slow. If you want to drive the RRs at 36-38 psi, you better have fast hands.
02-27-2017, 07:43 PM
#11
Chris holds the SPB track records at Sebring and Daytona (and probably some others), so if it works for him, he has the credentials to prove it.
From my way of thinking, once the tire hits 36 psi, I start to notice a difference from the apex out. If you've ever seen in-car video of one of Chris's fast laps, he rolls an incredible amount of speed into the turn...then corrects and corrects and corrects from the apex out. He has fast hands and he's a great driver. I am not. When I get the Toyo RR to 36+ psi, it feels slippery. The way Chris drives, it probably feels perfect.
He's fast, but he drives on a razor's edge. I'm slower because I like to feel the car settled beneath me. So, again...your choice...do you want to be fast or slow. If you want to drive the RRs at 36-38 psi, you better have fast hands.
https://vimeo.com/205371202
From my way of thinking, once the tire hits 36 psi, I start to notice a difference from the apex out. If you've ever seen in-car video of one of Chris's fast laps, he rolls an incredible amount of speed into the turn...then corrects and corrects and corrects from the apex out. He has fast hands and he's a great driver. I am not. When I get the Toyo RR to 36+ psi, it feels slippery. The way Chris drives, it probably feels perfect.
He's fast, but he drives on a razor's edge. I'm slower because I like to feel the car settled beneath me. So, again...your choice...do you want to be fast or slow. If you want to drive the RRs at 36-38 psi, you better have fast hands.
https://vimeo.com/205371202
03-08-2017, 10:15 AM
#13
For the record, I increased my pressures from 34 to 37 this past weekend at Road Atlanta and ran more than a second faster from last year. The tires never felt slippery and held their pressure over several long runs. Not that I ever doubted Chris or Matt, but higher pressures seem to work. I'll be shooting for 36-37 from now on.
03-08-2017, 10:18 AM
#14
For the record, I increased my pressures from 34 to 37 this past weekend at Road Atlanta and ran more than a second faster from last year. The tires never felt slippery and held their pressure over several long runs. Not that I ever doubted Chris or Matt, but higher pressures seem to work. I'll be shooting for 36-37 from now on.
