Faster Lap Times, For FREE? | The Importance Of Tyre Pressures [FREE LESSON]
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- Опубліковано 2 лип 2017
- It's something that is often overlooked by track day newbies and veterans alike - Correct tyre pressure.
In this video you will see how tyre pressures can affect the grip from your tyres In this demonstration we are using our Nissan 350z running Nitto NT01s, Texense IR tyre temp sensors with MoTeC C125 Dash logger.
Looking to learn more about EFI Tuning? Click here for a free tuning course - www.hpacademy.com/courses/efi... - Фільми й анімація
When you say "It's something that is often overlooked by track day newbies and veterans alike - Correct tyre pressure. ", it is not just overlooked on track day, I find a lot of people overlook it when driving on the road.
I check mine with a quick look just about every time I drive and always check the pressures when I top up my fuel tank.
I have also found that the "cats eyes" are a good way of checking while driving because they are uniform in shape - I know the sound my tyres makes as I hit them and if that sound changes, I check my tyres.
It was last year when I pulled over a highway patrol (I am not a cop) because his front passenger tyre was flat. I pulled up next to him at the lights and it took repeated beeping and waving out the window for him to finally wind his window down.
Always wanted to say - "Hey you, pull over now" (didn't have the time to explain why as the lights were about to go green) and when we pulled over, it was funny watching a cop suddenly go sheepish when he saw the flat tyre (it wasn't fully flat, but near enough to flat with a large bulge to be be very obvious and dangerous).
He was very thankful that I had pulled him over and then he proceeded to ring someone to get them to change the tyre.
yes mr tire kicker
Excellent video! Very educational. Tire pressure is a really big deal in the mountains/canyons too. Especially during Summer time when a 32psi tire will jump to 39psi due to the heat.
Yes it's one of the simplest things you can manage that will have such a large impact on your vehicle's performance.
It's not as 'sexy' as spending time and money on bigger turbos or shiny rims though so is often overlooked by many people. Their loss. Literally their loss on track too 😂- Taz.
@@hpa101Hi, for roll racing acceleration would I get faster acceleration if tyre pressure is low? I don't care much for traction because my car isn't high powered
I will always set my pressures to 30PSI all round cold for the 1st run of the day, knowing they'll over pressure, after that session 1st thing I do is then reset each tyre to 30, with different temps each tyre will be different. I find it takes 3 runs to get full heat soak. where the wheels, tyre skins and the air are all up and don't cool too much between run (bare in mind the idle/cooling time if it's a long time between runs). After the 2nd run I target 28 hot (so might get down to 24 or so cold) on the R32 Time Attack car with Ventus Z221 Semi slicks and on my old R33 Track/Street car I would run 30PSI hot with Z222 UHP RS3 tyres. This was because the RS3 side wall is quite soft and lower pressures could cause sudden instability. Hope this helps.
Hi, for roll racing acceleration would I get faster acceleration if tyre pressure is low? I don't care much for traction because my car isn't high powered
@r.k862 I do t do roll or drag, but lower rear pressure for max traction, with higher front for lower rolling resistance would be the go, how low... when I took the 33 to the strip I dropped them to 25psi because no lateral load, could probably run lower but I had to drive to the servo after to put air in for the drive home and didn't want to go too low. The get nowhere near the temp change that you do in track work from just a burnout.
@@tangles01 thanks man i appreciate your knowledge. I got a 370z NA and thinking of taking it to Eastern Creek roll racing for first time. I don't care about traction because my car isn't high powered. There is a debate going on, some say if using low tyre pressure is will reduce the rolling circumference which in result make car accelerate quicker but some say with the low tyre pressure there is more rolling resistance and won't make it go quicker.
I don't know which to believe. Do you know anything about this?
@@r.k862 Well once they are rotating on a straight line run, the centrifugal force will stand them up anyway. With low power, run stock road pressures if you're not going spin them, more pressure will reduce rolling resistance. You'll only drop the pressures if you need the traction. If you want to reduce the circumference, run a lower profile and or a a smaller wheel.
@@tangles01 thanks. My car placard says about 37psi is recommended. If I am not looking for traction but I am looking for fast acceleration what max psi should I set it at?
Great video guys!
Chur! - Taz.
I don't understand why this channel doesn't have more subs.
It's been neglected it a little bit but we're starting to gain momentum now via regular releases. Make sure you tell your mates and keep an eye out for new videos on Tuesdays and Thursdays ;) - Taz.
I'll see what i can do. :)
Keep up these detailed and informative videos.
I have a track-dedicated 350Z with Federal SS595 tires, 245/40R18 front, 275/40R18 rear (switching to 35 aspect ration next set). I also run with -3.2 camber in the front and -2.7 in the rear. I was told something early on that I have taken with me to the track each time, and it's been about 15 track days: to set the "cold" pressure to a point where by the time the session on the track is over the hot temp is equal or close to the max psi pressure recommended by the tire one is using so as to maximize the contact patch of the tire on the road. In the case of SS595's, the max pressure is 44, so I usually start out around 38 and by the time the ~20 mins session is over, I'm in the 42-45 range, depending. I deflate at the end of the session down back to around 40, so by the time the next session starts I'll be once again at my "cold" starting pressure of 38. It has worked for me, but I wonder if I could get the most out of the tire by running lower pressures? The info I found here seems to contradict what I have been doing? Have I been misinformed? I am still relatively new to this sport/hobby and always looking to learn/improve.
Another great video Andre!
Thanks mate! Appreciate you taking the time to watch. - Ben
High Performance Academy , ben are u the one behind the scenes?
Jota, there are a bunch of us behind the scenes now. But yes I'm one of them :) - Ben
Excellent advice
Die hard follower of your videos and thinking to purchase the tuning video package on the website. A quick question though. Running Nitto Invo 225/45/R17 on my toyota gt86 (NA Stage 2+ ECU Tune done myself on OFT tablet), for mountain runs with steep inclines and hairpins, I set my tyres (both back and front) at 38 psi (outside weather temperature goes from 22 celcius on the bottom of the hill to 14 celcius on top of the hill). After about a couple of hard corners, the car understeers. On a tyre pressure of 35 psi both front and back, the car in corners feels like jelly running on side walls. Any recommendations? I am harsh on the tyres, however would like to have ultimate grip starting bottom of the hill to the top. the hill climb is 12.5 kms, average gradient of 6.1%.
Mean video Andre.
Thanks Karl! Appreciate the support mate.
Great stuff folks, revealing the secrets to faster lap times to help others! Or...Is this the motorsport equivalent of a magician revealing his secrets?
We like to think of it more as a science and good scientists share their results :) - Ben
in a FF car would the tire pressures usually be best set at equal pressures front to back? Assuming the front tires need more pressure to support more vehicle weight but also get hotter due to the higher level of friction they experience
Good question. We suggest you start with even pressures and then start adjusting only the front OR the rear by 2psi increments up or down and see what difference it makes - Taz
I was curious. My tire temps vary on straightaways to turns, should I adjust tire pressure so my temps are to be more even in the turns. Straightaways they look under inflated on the temp gauge but turns they even out. Tia -Gerald
I run 30-31 psi in the rear and 36-37 in the front on my street Z
is that a 370Z and what are the tire sizes? for a 370Z mfg recommends 32 f and 32 rear. why change from that based on your experience? I’d like to get your thoughts as I am playing with tire pressures on my ‘19 Z. thx
Any F1 gamers here?
the highest may not be fastest but will sure beat the lowest or flat tire
Sounds a lot of psi 32
almost $5k tire monitoring setup
Yes sir. To be clear you don't need tyre temp sensors to set your tyre pressures. If you are a more serious race team then tyre temp sensors along with a knowledgable tuner / engineer will provide a great deal of benefit. We find them helpful for teaching and R&D :) - Ben
I check mine with a $150 laser thermometer (Also used for brake temps) and a $30 tyre pressure gauge. Good enough to win the Performance class in Japans Time Attack. If I has these guys kit, I would use it too, but the gains in tyre management from the simple setup I have to that would be small, worth it if you're at the pointy end of a decent series though, at a certain point 5k to gain half a second or greater consistancy is a sound investment and much cheaper than more HP or Aero to achieve the same time gain.
I couldn't understand a word you said. That Nissan is talking much louder than you.
She's a bit loud alright sorry Chief! Turn the captions on for the track section so you don't miss out - Taz