Busa Dreamin
Registered
Pulled this off another site.
He is talking about the track but I would think that it pertains to the road also.
The dealer set my psi at 42 and now I'm wondering if the pressure goes up when the tires warm up how much traction do I have.
It just seems that the traction would be less then it could be at that psi on two wheels.
I know this has been asked before, but after reading this and a recent lockup on my front wheel (and accident) it has me wondering. I will check this 5 psi rule on my bike when I get it back.
"One way to arrive at your correct cold tire pressures is the 5 psi rule.
What you're shooting for is for the tires go go up 5 psi from the time that they are completely cold to the time that you are just coming in off the track.
The first step is to set your front and rear tire pressures to whatever your track tire vendor recommends for your combination. If you don't have a recommendation, 30 psi front and rear is as good a place to start as any.
Go out and get the tires hot. Like your out-lap (warm-up lap), 5 hot laps, and then come back in. Immediately check your front and rear tire pressures.
If your tire pressure has gone up more than 5 psi, that means that your cold tire pressure was too low and you need to add a pound of air.
If your tire pressure has gone up less than 5 psi, that means that your cold tire pressure was too high and you need to release a pound of air.
So let's say that you go out at 30F/30R cold and come back in at 36F/34R hot. That means that you need to add a pound of air to the front and release a pound of air from the rear. So for your next session, you'll be going out at 31F/29R. If you come back in at 36F/34R after the second session, that's a 5 psi increase front and rear, and you've got it nailed.
I know it sounds backwards, but it's not. Re-read it until it makes sense to you and you'll get it figured out."
He is talking about the track but I would think that it pertains to the road also.
The dealer set my psi at 42 and now I'm wondering if the pressure goes up when the tires warm up how much traction do I have.
It just seems that the traction would be less then it could be at that psi on two wheels.
I know this has been asked before, but after reading this and a recent lockup on my front wheel (and accident) it has me wondering. I will check this 5 psi rule on my bike when I get it back.
"One way to arrive at your correct cold tire pressures is the 5 psi rule.
What you're shooting for is for the tires go go up 5 psi from the time that they are completely cold to the time that you are just coming in off the track.
The first step is to set your front and rear tire pressures to whatever your track tire vendor recommends for your combination. If you don't have a recommendation, 30 psi front and rear is as good a place to start as any.
Go out and get the tires hot. Like your out-lap (warm-up lap), 5 hot laps, and then come back in. Immediately check your front and rear tire pressures.
If your tire pressure has gone up more than 5 psi, that means that your cold tire pressure was too low and you need to add a pound of air.
If your tire pressure has gone up less than 5 psi, that means that your cold tire pressure was too high and you need to release a pound of air.
So let's say that you go out at 30F/30R cold and come back in at 36F/34R hot. That means that you need to add a pound of air to the front and release a pound of air from the rear. So for your next session, you'll be going out at 31F/29R. If you come back in at 36F/34R after the second session, that's a 5 psi increase front and rear, and you've got it nailed.
I know it sounds backwards, but it's not. Re-read it until it makes sense to you and you'll get it figured out."
