Too FAST For Street Tyres | RP968

🔥 Building a fast car? Get $400 OFF the all-inclusive VIP online course package deal: hpcdmy.co/vipy124
🛑 Brake System course. Design & optimise your set up. Now 50% OFF your first course: hpcdmy.co/offery124
With WTAC moving from DOT-rated semi-slicks to full slicks, the RP968 was assured a faster lap time in 2023, and it delivered.
Race engineer Dejan Ninic of Complete Analysis, an ex-WRC consultant amongst other accolades, gives us the rundown on the change from Yokohama Advan's to full slicks for the 2023 edition of the ‪@YokohamaMotorsports‬ ‪@WorldTimeAttackChallenge‬.
The RP968 team & driver Barton Mawer managed to get the time down from their previous best of 1:19.27 to 1:17.86 over the course of the weekend, giving them the overall win for the 4th time in a row.
We also saw a massive jump up the time sheets from Cole Powelson, going from a previous best of 1:30:02 to a 1:25.94 in the Lyfe Racing R35 GT-R. The old S13 Hammerhead, now under new ownership and rechristened as Tanuki, also set a blistering 1:20.45 time on debut, noting the car has also had some huge changes to be dialled in and had to be retired before the end of the event.
The Open and Clubsprint classes also saw some new class records this year from the Xtreme GTR and DC Jap Automotive teams noting not all classes have had the same options in tyre open up to them either.
Note 2023 tyre restrictions for Pro and Pro-Am Classes were in place in regards to the car weight dictating the allowable tyre width and height, so while teams can now run slicks, there are still limitations.
------------------------------------
TIME STAMPS:
0:00 - Track Record SMASHED
0:20 - DOT Tyre Limitations
1:38 - Vertical Load A Non-Issue?
2:16 - One Shot Tyre?
3:14 - Old Vs New Specs
4:26 - New Alignment Options
4:41 - Tyre Warmers
5:35 - Outlap
5:58 - Compound
6:14 - Rolling Diameter & Aero
7:01 - Lap Record Broken
7:20 - Thanks For Your Time Dejan!
7:33 - BUILD | TUNE | DRIVE
------------------------------------
🏆 Win an ECU, engine components, wiring tools, alignment setups or more. Free entry! Here's the latest giveaway, enter now: hpcdmy.co/giveaway
🏎 Want to learn how to EFI an aftermarket ECU like a MoTeC, Haltech, Link, AEM, Syvecs, EMtrom, Maxx, Ecumaster, MegaSquirt, Arduino, MicroSquirt, Holley, FuelTech, ME or something else completely different? Fee lessons right here, enroll now: hpcdmy.co/EFI101y
💻Start learning how to reflash tune your stock ECU using platforms like HP Tuners, EcuTek, COBB, EFILive, Hondata, ECUFlash, Romraider, WinOLS and more! Sign up for the next free lesson now: hpcdmy.co/hptly
⚠️ Want to learn more about motorsport wiring? Claim your spot in the next FREE lesson: hpcdmy.co/wiringlessonyt
🧰 Learn more about Performance Engine Building by coming along to the next FREE lesson: hpcdmy.co/eby
🔧 Interested in learning how to do your own wheel alignment for the track or street? Start with a free alignment & suspension 101 lesson now: hpcdmy.co/aljyt
🛻 Learn more about performance diesel engine tuning. Start instantly with 4 free lessons: hpcdmy.co/essential-diesel-kn...
------------------------------------
LINKS:
Website and Courses: hpcdmy.co/hpa
Podcast: hpcdmy.co/podcast
Merch (HPA tees & hoodies): hpcdmy.co/merchy
------------------------------------
TAGS:
#highperformanceacademy #buildtunedrive #rp968 #envirage #elmerracing #billetblock #wtac #thor #learndriveoptimise #motorsport #datanerd #auto #carmods #automotive #motorsports #wtac #timeattack #tires #tyres #oneperfectlap

[@hpa101]

🔥 Building a fast car? Get $400 OFF the all-inclusive VIP online course package deal: hpcdmy.co/vipy124 🛑 Brake System course. Design & optimise your set up. Now 50% OFF your first course: hpcdmy.co/offery124 TIME STAMPS: 0:00 - Track Record SMASHED 0:20 - DOT Tyre Limitations 1:38 - Vertical Load A Non-Issue? 2:16 - One Shot Tyre? 3:14 - Old Vs New Specs 4:26 - New Alignment Options 4:41 - Tyre Warmers 5:35 - Outlap 5:58 - Compound 6:14 - Rolling Diameter & Aero 7:01 - Lap Record Broken 7:20 - Thanks For Your Time Dejan! 7:33 - BUILD | TUNE | DRIVE Take $50 USD off ANY HP Academy course with this coupon: KZbin50 Enroll now: hpcdmy.co/50offytc - Taz 👨🏻

[@Andrew260RS]

What an awesome interview. Can’t wait for the range of interviews from WTAC 23!!

[@slfrules1]

Incredible! already blisteringly fast

[@YensR]

love that car, great interview as always :)

[@hpa101]

Cheers fella! A credit to the team this one for sure. Not an insignificant investment given the costs associated with this car, but we just need another team or 2 at this level now to really keep the RP968 crew on their toes - Taz.

[@belyays4986]

It’s honor 4 me to be the man, who seen this build from the start!! DMac is a great passionated man🔥 this build makes my heart bumps harder and my soul smiles😌🌚🖤

[@gordowg1wg145]

If one HAS to run a "DOT", or other prescribed tyre, there can be a significant benefit in shaving the tyre - removing tread rubber - to the minimum allowed. With less tread mass there is less heating from the tread distortion, and the tyre can also reject it more easily as the heat has to travel through less rubber. Strange as it may sound, going to proper "race" tyres might be a cost saving, if one can get more use out of the tyres. Plus, of course, there is the safety aspect if the "DOT" tyres are failing.

[@georgefrempter596]

💪💪 Awesome !!!

[@timeattacknews]

Excellent insight!

[@thewing331]

Awesome interview guy's the know how between you is amazing and that car is so wicked.👍☘️

[@hpa101]

Glad you enjoyed it, cheers mate! - Taz.

[@HHCHunterYTC]

The mutual respect is admirable. I think many in the industry can appreciate Andre. To some degree I'm a bit sad that WTAC isn't staying with the DOT approved tire as it seems this would further increase the average cost of entrance and moving away from the spirit of WTAC in general.

[@hpa101]

I would agree, BUT, I think the Pro and Pro-Am classes where slicks are allowed are pretty far from the average entry. Slicks, while a fair investment every race weekend, are really not the biggest part of the budget. The Clubsrpint class, which is very active, is still 'limited' to the DOT rated Advan's, which is a tyre that is also more applicable to those builds as well making it a win win - Taz.

[@garagecedric]

In this class the cars are pretty much tubeframe silhouette cars with non production car engines anyway, running road legal tyres is almost silly when the cara have nothing in common with a road car. Especially considering the safety aspect.

[@NicoKyunKyun]

i don't think tyre cost is an issue for a motorsport where the turbo can be a consumable item

[@robjonson629]

just enter the pleb class or go banger racing

[@maedmaex125]

@@garagecedric WTAC rules basically state that original strut towers and everything between must be original or at least resemble original structure, rules only allow modifications for clearance of certain parts, no tube frames are allowed. Engines must be based on a production engine too.

[@aaronmcconnell9369]

Raise her up and soften her up a bunch and bring that monster to Pike’s Peak!!! Like, please 🙏🏻

[@Mr6Sinner]

hearing DOT pronounced like a word caught me off guard lol

[@hpa101]

Just keeping you on your toes mate!

[@JETZcorp]

Right? I'm used to Deeyo Tea. Lol

[@phillyphil1513]

#TOOFASTTOOFURIOUS

[@stuartcarter5414]

When you go hard out on a tyre and rim that has no heat in it You can tear the rubber about 3 mm from the surface Tyre warmers should go on for at least an hour before track use You really need to get the carcass warm You’ll find that the handling is so much more predictable as this side wall forms a part of you suspension spring rate Tyre warmers are a must for any serious person It’s a safety issue I’ve seen so many cars crash on cold tyres it begs belief The elcheapo ones from China cost $1500 nz and to be fair they’re not half bad If you’re into going fast and the rules allow Do yourself a favour and buy some and use them

[@hpa101]

Yes tyre warmers are amazing. Not all events lend themselves to their usage, hill climbs for example, but where you can use them, are allowed and have the budget to do so (you have to power them with $somthing as well, not all tracks give you that) then they are absolutely a no brainer for sure, we agree 👍 - Taz.

[@christiaancarstens4091]

Do people ever refuse interviews, and why?

[@hpa101]

Most just say 'yeah, lets do it later' rather than just saying no, which is a little annoying. No would be better and more polite. Andre will only ask once or twice then move on. Why no? Not everyone wants to be on camera and potentially make themselves look like an idiot. We're not here to do that to people and we make that clear to try settle peoples nerves. Many people often think they know less than they do and actually share some great insights once you get them into the swing of things. We generally avoid people who are pushing to be on camera, they are often the opposite in our experience. We also really try to stick to the technical people which can rub some non-tech company or car owners up the wrong way sadly. Not our intention. Andre will often ask around about a potential guest before chatting to them as well as if others he knows are saying good things about them, that is a good sign they are on the ball in what they do at least. Hope that gives you a little bit of insight into what you've been watching for the last 6 years or so mate! Cheers for the question and hope you're still enjoying what the team do after all this time 😎 - Taz.

[@christiaancarstens4091]

@@hpa101 Thanks for the reply, was thinking he would get reviews just for the asking. The way you guys do it is very unique and laid back while being extremely informative.

[@jpilagan2094]

How fast is an f1 car around this track? And this is faster?😵‍💫

[@hpa101]

While a very fast car, this is going to be a long way off the pace of an F1 car. The rule books are also very different for what they can and can't do even if they had an F1 level budget - Taz.

[@gordowg1wg145]

It was faster than an A1GP car, which is a still a big step down from an F1 car, which while being slightly heavier has nearly twice the power, and better aero' and chassis dynamics - en.wikipedia.org/wiki/A1_Grand_Prix_car

[@rx323bug]

Pro tip… When you set a lap record but still have more opportunities to go even faster, don’t celebrate too hard by dancing on the roof of the car and then jumping off shattering your heel.

[@hpa101]

He knows for next year haha Hope Barton 'heels' up OK! - Taz.

[@rx323bug]

I was watching the live stream they ran and as soon as he hit the ground I though… hmmm 🤔 he looked like he didn’t enjoy that landings, I think he’s done himself a mischief there. Had no idea how bad it was though!

[@davidciesielski8251]

His parents must be so ashamed... to have raised such a dumb son!!!! LOL! I have been into this kind of thing for a while... and never thought of half of that stuff in that way! Wow, Thanks

[@Andrew260RS]

What on earth are you talking about?

[@Nights_Shadow]

Your parents or his?