4-AXIS SMART INGESTION
[SIGN IN]
9,000RPMHPDETVTHE GRASSROOTS MOTORSPORT NETWORK
HPDE.TVCREATORS & DRIVERSGreg Karr
OFFICIAL CHANNEL ↗
CHANNEL TELEMETRY & CREATOR IMPACTServer-side verified rotation metrics for Greg Karr
Direct Views12
Stint & Modal Plays0
Hero Rotations4
Outbound YT Clicks0
Vault Slots
4 / 12Free 12
CH 717
CANONICAL:hpde.tv/channel/greg-karr
YouTube
Greg Karr

Greg Karr

INDEXED VIA YOUTUBE · UNCLAIMED CHANNEL
11 YT SubsDriverDRIVER
@gregkarr21·Buttonwillow, CA · Rosamond, CA·Home Track: North American Road Course
HPDE.TV Indexed Telemetry Summary

Greg Karr has 4 indexed track day onboard sessions on HPDE.tv across North American Road Course, Willow Springs International Raceway, Buttonwillow Raceway Park (Buttonwillow, CA, Rosamond, CA) piloting grassroots track machinery.

VISIT OFFICIAL CHANNEL ↗Browse All 1569 Channels
PRIMARY CHASSISGrassroots Production Track Build
DRIVING CATEGORYGRASSROOTS CLUB RACE
TELEMETRY SYSTEMGoPro 4K Cockpit POV + GPS Data
ATTRIBUTED CIRCUITS3 Tracks Logged
Circuits & Track Locations in Indexed Stints:
Buttonwillow, CARosamond, CASANCTION:National Auto Sport Association (NASA)
9,000RPMHPDETVTHE GRASSROOTS MOTORSPORT NETWORK//CH 717Greg Karr
@gregkarr21
NASA AAA Speedway 5 20 18 Honda Challenge 4 race
CHASSIS: Grassroots Production Track Build|TELEMETRY: GoPro 4K Cockpit POV + GPS Data|PACE: Session StintTitle-Reported|HOME CIRCUIT: North American Road Course
LIVE CIRCUIT CONTEXT//North American Road Course
3.74 MILES17 TURNS
CIRCUIT BENCHMARK REFERENCE LAP (VERIFIED)
2:16.42Chevrolet Corvette C7 Z06
SYNC SETUP TO HPDE.APP
REFERENCE LAP TIMES BY CHASSIS CLASS
Miata / GR86 / BRZ2:31.80
205/50R15 200TW
Momentum priority through high-speed transitions.
E46 M3 / C5-C7 / Mustang2:18.50
295/30R19 Front · 325/30R19 Rear
Heavy brake threshold zone damping support.
GT3 / GT4 / Time Attack2:12.10
Pirelli Trofeo R / Hoosier R7
High downforce stability over apex curbing.
TARGET TIRE PRESSURES & ALIGNMENT
COLD TARGET PSILF 26.5 · RF 25.5LR 25 · RR 24.5
HOT TARGET PSILF 32.5 · RF 32LR 30.5 · RR 30
CAMBER: Front -3.2° / Rear -2.2°
BRAKE SPECIFICATION & ROTOR HEAT
FLUID: Castrol SRF DOT 4 (>590F Boiling)
PADS: Hawk DTC-70 / Pagid RSC1
⚠ Pad inspection recommended every 4 track sessions.
OFFICIAL DRIVER DECAL PROGRAM
Are you the driver, instructor, or creator on this circuit?
Claim your official [handle].hpde.tv subdomain channel, sync in-car telemetry to your Driver Passport, and receive an official metallic QR window decal for your paddock car.
✓ Instant Free Subdomain✓ Verified Driver Passport✓ High-Quality Metallic QR Window Decal
CLAIM CHANNEL IN 2s · GET QR WINDOW DECAL
CHANNEL VIDEO ARCHIVE // GREG KARR

Verified Channel Broadcasts & In-Car Stints (4)

Grassroots In-Car Stints
North American Road Course
NASA
NASA AAA Speedway 5 20 18 Honda Challenge 4 race
GoPro 4K Cockpit POV + GPS Data
20:35

NASA AAA Speedway 5 20 18 Honda Challenge 4 race

By Greg Karr·GoPro 4K Cockpit POV + GPS Data·Grassroots Production Track Build
Session StintTitle-Reported
Willow Springs International Raceway
NASA
NASA Willow Springs Honda Challenge H4 3 17 19 full race
GoPro 4K Cockpit POV + GPS Data
28:54

NASA Willow Springs Honda Challenge H4 3 17 19 full race

By Greg Karr·GoPro 4K Cockpit POV + GPS Data·Grassroots Production Track Build
1:27.40Title-Reported
Buttonwillow Raceway Park
NASA
NASA Buttonwillow 4 22 18 full race
GoPro 4K Cockpit POV + GPS Data
6:18

NASA Buttonwillow 4 22 18 full race

By Greg Karr·GoPro 4K Cockpit POV + GPS Data·Grassroots Production Track Build
1:54.60Title-Reported
Buttonwillow Raceway Park
NASA
NASA Buttonwillow CW#14 October 29 2017 Honda Challenge Race
GoPro 4K Cockpit POV + GPS Data
27:53

NASA Buttonwillow CW#14 October 29 2017 Honda Challenge Race

By Greg Karr·GoPro 4K Cockpit POV + GPS Data·Grassroots Production Track Build
1:54.60Title-Reported
GREEN TREE MOTORSPORT NETWORK // DRIVER CONTINGENCY ROADMAP

Independent Platform · Driver & Club Sponsorship Flywheel (In Development)

HPDE.tv is an independent grassroots broadcast platform built by the GreenTree Motorsport Network. We are actively developing our Driver Sponsorship Flywheel to connect high-traffic amateur drivers and club organizers with future tire, brake, lubricant, and track-insurance sponsors. All 6 ecosystem spokes are self-operated by our team.

Driver & Club Inquiries

EXPLORE SIBLING DRIVER CHANNELS:

View All Creators →
Steve F - DriveTDX

Steve F - DriveTDX

Sebring International Raceway / Homestead-Miami Speedway
Jackie Ding

Jackie Ding

Virginia International Raceway / COTA
Eric Kutil

Eric Kutil

Mid-Ohio Sports Car Course
Danny Steyn

Danny Steyn

Sebring International Raceway
CANONICAL BROADCAST DOSSIER // CH 717 PERMANENT DIAL

Every creator indexed in the HPDE.TV Vault receives an auto-provisioned hpde.tv/channel/greg-karr broadcast dossier and permanent TV Guide dial number. Are you the owner of this channel? Claim ownership free to add car setup spec sheets, sponsor redirects, and timing-verified PB lap times.

PRO SAAS SPECS →