Front tire pressure/Reaction time - Page 2

GTX JOHN · 10-13-2020, 07:09 PM

The tire height makes a significant difference in reaction time.

5 or 10 Lbs pressure in the tire = very little that I can find.

Maybe if I took the front runners from 40 to 10 it might make a observable
difference. Someone can tell me = I am not going to try it!

My Blood Sugar level makes a lot more difference = Of Course - I am old!

Jim Caughlin · 10-13-2020, 07:26 PM

I'm not sure of the exact height of the stage beam but as an experiment, I put a 3" tall block in front and behind my 26" tall tire, the measurement at 40 PSI and 10 PSI was exactly the same. Based on that, I think the change in reaction time is a mental thing and not real.

Jim Caughlin
SS 6019

jamie2370 · 10-15-2020, 04:23 PM

[QUOTE=GTX JOHN

My Blood Sugar level makes a lot more difference = Of Course - I am old![/QUOTE]

From a fellow diabetic..... yes it does. I keep good check on mine because it makes a HUGE difference in react and driving the stripe.

I check my tires in the morning and thats about it lol. 38frt & 19rear is my bracket tune
Rpms will change react the most, mine is 200 for .010 up to a certain point

LittleBubba1150 · 10-15-2020, 11:49 AM

Many different opinions from many great drivers but in my personal opinion I don’t feel front tire pressure is very important. I normally don’t check front tires after I leave the house unless one or both look like they’re leaking for some reason. And pretty similar with rear tires. I’ll usually check them every morning as they can vary quite a bit with outside temperature. And sometimes I’ll give them a check to make sure they’re about the same throughout the day. But whatever works for you or makes you feel most confident and comfortable is what’s most important!

GTX JOHN · 10-15-2020, 01:27 PM

We check all four each morning and the rear
most times in the staging lane unless we are
rushed.

Lenny5160 · 10-15-2020, 08:41 PM

Quote:

Originally Posted by LittleBubba1150

Many different opinions from many great drivers but in my personal opinion I don’t feel front tire pressure is very important. I normally don’t check front tires after I leave the house unless one or both look like they’re leaking for some reason. And pretty similar with rear tires. I’ll usually check them every morning as they can vary quite a bit with outside temperature. And sometimes I’ll give them a check to make sure they’re about the same throughout the day. But whatever works for you or makes you feel most confident and comfortable is what’s most important!

I feel the same way. I typically check mine before the first and second passes of the day, and that's about it.

With the dragster I pay a little more attention and check before each pass, but I buy the cheapest gauge that is in the range needed.

The Hawk · 10-16-2020, 08:39 PM

I check mine every run. I`ve seen front tire pressure drop 2 to 3 pounds after the sun drops. Same scenario during the day as it gets warmer. Do the same with both my V6 Stocker and 11 second S/P car.

Willyracer · 10-16-2020, 11:00 PM

Well I didn't get to try anything at Indy today.
We had a tire hooking problem.
Like eye to the sky problem.On 2nd pass tried to
Kill some power,took 14 degrees out at the start line
and dropped the 2 step 400 rpm. Then I keep my
foot in it. Hung the front end way up. Busted the pass
Side shock and think it messed the top ball joint up.
Loaded up and went back home
To say Indy was hooking today was a under statement.
Hope someone got a good picture.
Lol

David

10-13-2020, 07:09 PM	#1
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,739 Likes: 2,824 Liked 2,493 Times in 700 Posts	Re: Front tire pressure/Reaction time The tire height makes a significant difference in reaction time. 5 or 10 Lbs pressure in the tire = very little that I can find. Maybe if I took the front runners from 40 to 10 it might make a observable difference. Someone can tell me = I am not going to try it! My Blood Sugar level makes a lot more difference = Of Course - I am old! __________________ John Irving 741 Stock 741 Super Stock Last edited by GTX JOHN; 10-13-2020 at 07:16 PM.

10-13-2020, 07:26 PM	#2
Jim Caughlin Senior Member Join Date: Mar 2002 Location: Woodburn, Or Posts: 686 Likes: 84 Liked 805 Times in 245 Posts	Re: Front tire pressure/Reaction time I'm not sure of the exact height of the stage beam but as an experiment, I put a 3" tall block in front and behind my 26" tall tire, the measurement at 40 PSI and 10 PSI was exactly the same. Based on that, I think the change in reaction time is a mental thing and not real. Jim Caughlin SS 6019

10-15-2020, 04:23 PM	#3
jamie2370 Member Join Date: Dec 2014 Location: Perry, GA Posts: 331 Likes: 11 Liked 239 Times in 90 Posts	Re: Front tire pressure/Reaction time [QUOTE=GTX JOHN My Blood Sugar level makes a lot more difference = Of Course - I am old![/QUOTE] From a fellow diabetic..... yes it does. I keep good check on mine because it makes a HUGE difference in react and driving the stripe. I check my tires in the morning and thats about it lol. 38frt & 19rear is my bracket tune Rpms will change react the most, mine is 200 for .010 up to a certain point Last edited by jamie2370; 10-15-2020 at 04:24 PM. Reason: ADDED

10-15-2020, 11:49 AM	#4
LittleBubba1150 Junior Member Join Date: Jan 2019 Posts: 6 Likes: 0 Liked 4 Times in 2 Posts	Re: Front tire pressure/Reaction time Many different opinions from many great drivers but in my personal opinion I don’t feel front tire pressure is very important. I normally don’t check front tires after I leave the house unless one or both look like they’re leaking for some reason. And pretty similar with rear tires. I’ll usually check them every morning as they can vary quite a bit with outside temperature. And sometimes I’ll give them a check to make sure they’re about the same throughout the day. But whatever works for you or makes you feel most confident and comfortable is what’s most important!

10-15-2020, 01:27 PM	#5
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,739 Likes: 2,824 Liked 2,493 Times in 700 Posts	Re: Front tire pressure/Reaction time We check all four each morning and the rear most times in the staging lane unless we are rushed. __________________ John Irving 741 Stock 741 Super Stock

10-16-2020, 08:39 PM	#7
The Hawk VIP Member Join Date: Mar 2003 Location: Littleton,Colorado Posts: 1,194 Likes: 0 Liked 249 Times in 109 Posts	Re: Front tire pressure/Reaction time I check mine every run. I`ve seen front tire pressure drop 2 to 3 pounds after the sun drops. Same scenario during the day as it gets warmer. Do the same with both my V6 Stocker and 11 second S/P car. __________________ Lane Weber It`s Not What You Drive That Wins....It`s How You Drive It

10-16-2020, 11:00 PM	#8
Willyracer Junior Member Join Date: Feb 2019 Posts: 90 Likes: 9 Liked 57 Times in 24 Posts	Re: Front tire pressure/Reaction time Well I didn't get to try anything at Indy today. We had a tire hooking problem. Like eye to the sky problem.On 2nd pass tried to Kill some power,took 14 degrees out at the start line and dropped the 2 step 400 rpm. Then I keep my foot in it. Hung the front end way up. Busted the pass Side shock and think it messed the top ball joint up. Loaded up and went back home To say Indy was hooking today was a under statement. Hope someone got a good picture. Lol David