Best Track Time in a 718 GT4
#61
Drifting
#62
Drifting
315/30 won't fit according the my alignment guy who measure current clearance with 295/35 and then adding the width difference. 305 will clear my exhaust system but definitely no way to get a 315 in rear. To be honest 265/305 is better grip my .2 GT3 since we are mid-engine. Just need better suspension to keep with the velocity in the corners from high speeds with this much tire on the ground.
Last edited by porscheflat6; 06-25-2021 at 04:30 PM.
#63
Racer
#64
Rennlist Member
718 GT4, Stock Engine, TPC Toe-Links, Akrapovic OAP.
Finally broke the 2:40 at this weekends Northwoods Shelby Club event, new personal best is 2:38.36. What a weather PITA. Hot and Dry everywhere else in the US but here in Great Lakes area of the MidWest.
Noticed the Dunlop Sport Race Maxx 2 really drop off after getting up to temp. I'm targeting 33F/36R psi and usually getting there by lap 2. Generally my quickest times are within the first 4 laps. Alignment is Camber F -1.65/0.3mm per toe-in; Camber R: -1.5/1.0mm toe-in per.
Noticed the Dunlop Sport Race Maxx 2 really drop off after getting up to temp. I'm targeting 33F/36R psi and usually getting there by lap 2. Generally my quickest times are within the first 4 laps. Alignment is Camber F -1.65/0.3mm per toe-in; Camber R: -1.5/1.0mm toe-in per.
Last edited by phefner; 06-28-2021 at 01:30 PM.
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clib (06-28-2021),
porscheflat6 (06-28-2021)
#65
Rennlist Member
You and me both. I get frustrated on the track bc I know I'm leaving so much on the table. Any epiphanies you've come across recently you'd like to share?
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porscheflat6 (06-28-2021)
#67
Drifting
Finally broke the 2:40 at this weekends Northwoods Shelby Club event, new personal best is 2:38.36. What a weather PITA. Hot and Dry everywhere else in the US but here in Great Lakes area of the MidWest.
Noticed the Dunlop Sport Race Maxx 2 really drop off after getting up to temp. I'm targeting 33F/36R psi and usually getting there by lap 2. Generally my quickest times are within the first 4 laps. Alignment is Camber F -1.65/0.3mm per toe-in; Camber R: -1.5/1.0mm toe-in per.
https://youtu.be/R5BeF1PSAGE
Noticed the Dunlop Sport Race Maxx 2 really drop off after getting up to temp. I'm targeting 33F/36R psi and usually getting there by lap 2. Generally my quickest times are within the first 4 laps. Alignment is Camber F -1.65/0.3mm per toe-in; Camber R: -1.5/1.0mm toe-in per.
https://youtu.be/R5BeF1PSAGE
A few weeks ago I ran at 31/33 hot and they were pretty good for about 5 hard laps before getting slippery.
The following users liked this post:
phefner (06-28-2021)
#68
Rennlist Member
The following users liked this post:
porscheflat6 (06-28-2021)
#69
Rennlist Member
Finally broke the 2:40 at this weekends Northwoods Shelby Club event, new personal best is 2:38.36. What a weather PITA. Hot and Dry everywhere else in the US but here in Great Lakes area of the MidWest.
Noticed the Dunlop Sport Race Maxx 2 really drop off after getting up to temp. I'm targeting 33F/36R psi and usually getting there by lap 2. Generally my quickest times are within the first 4 laps. Alignment is Camber F -1.65/0.3mm per toe-in; Camber R: -1.5/1.0mm toe-in per.
https://youtu.be/R5BeF1PSAGE
Noticed the Dunlop Sport Race Maxx 2 really drop off after getting up to temp. I'm targeting 33F/36R psi and usually getting there by lap 2. Generally my quickest times are within the first 4 laps. Alignment is Camber F -1.65/0.3mm per toe-in; Camber R: -1.5/1.0mm toe-in per.
https://youtu.be/R5BeF1PSAGE
are you have with your alignment settings?
#70
Rennlist Member
@clib I’m heading to the dealer to replace a corded drivers side rear and fluid service (oil/brake) later this week. Ordered some shims from CMS, so going to add about 6mm in shims to get me closer to -2.0 Camber front and rear; then set the front toe-in closer to 0, and rear toe to 2.0mm tow-in per.
I think that will about do it. Moving forward I want to focus on consistency, and less with the ultimate time.
I think that will about do it. Moving forward I want to focus on consistency, and less with the ultimate time.
Last edited by phefner; 06-28-2021 at 11:13 PM.
The following 2 users liked this post by phefner:
clib (06-29-2021),
porscheflat6 (06-28-2021)
#71
Drifting
@clib I’m heading to the dealer to replace a corded drivers side rear and fluid service (oil/brake) later this week. Ordered some shims from CMS so going to add about 6mm in shims to get me closer to -2.0 Camber front and rear; then set the front toe-in closer to 0, and rear toe to 2.0mm tow-in per.
#72
Rennlist Member
Great suggestions @porscheflat6 . First for next year is a set of dedicated 19” APEX wheels for the track. Then I like your idea. Going to budget for both.
I clocked 10,000 miles this weekend as I arrived at Road America. 9,000 of those miles over the last 10 months have been B-roads, leaving a 1,000 miles on the track. So clearly a 90/10 ratio.
I’ve not seen anyone bust 2:30 at Road America in a GT4 without significant track mods. At 2:38, I know there are a few seconds in technique alone, and I want to find those before spending too much more on mods.
I really love this car.
I clocked 10,000 miles this weekend as I arrived at Road America. 9,000 of those miles over the last 10 months have been B-roads, leaving a 1,000 miles on the track. So clearly a 90/10 ratio.
I’ve not seen anyone bust 2:30 at Road America in a GT4 without significant track mods. At 2:38, I know there are a few seconds in technique alone, and I want to find those before spending too much more on mods.
I really love this car.
The following users liked this post:
porscheflat6 (06-28-2021)
#73
Drifting
Great suggestions @porscheflat6 . First for next year is a set of dedicated 19” APEX wheels for the track. Then I like your idea. Going to budget for both.
I clocked 10,000 miles this weekend as I arrived at Road America. 9,000 of those miles over the last 10 months have been B-roads, leaving a 1,000 miles on the track. So clearly a 90/10 ratio.
I’ve not seen anyone bust 2:30 at Road America in a GT4 without significant track mods. At 2:38, I know there are a few seconds in technique alone, and I want to find those before spending too much more on mods.
I really love this car.
I clocked 10,000 miles this weekend as I arrived at Road America. 9,000 of those miles over the last 10 months have been B-roads, leaving a 1,000 miles on the track. So clearly a 90/10 ratio.
I’ve not seen anyone bust 2:30 at Road America in a GT4 without significant track mods. At 2:38, I know there are a few seconds in technique alone, and I want to find those before spending too much more on mods.
I really love this car.
The following users liked this post:
phefner (06-29-2021)
#74
Rennlist Member
The following users liked this post:
porscheflat6 (06-29-2021)