D-Street Type R AutoX info sharing

trucke

Member
First Name
Art
Joined
Feb 18, 2020
Messages
40
Reaction score
43
Location
Hendersonville, North Carolina
Car(s)
2019 CTR; 2008 Highlander Limited; 2013 Ford Focus SE; 1987 Toyota Corolla FX16 GT-S
Country flag
I leave the car running and pop the hood. I run the A/C to cool me when I'm in the car waiting to move to the start. No heating issues at Bristol, but temps have only been in the 80's. I use a sprayer on the tires.



Advertisement


 

David Price

Member
First Name
David
Joined
Feb 8, 2019
Messages
17
Reaction score
18
Location
iOWA
Car(s)
2019 CTR
Country flag
Here is my current autocross DS setup for my 2019 CTR:
Karcepts 5 hole set at full stiff, 265/19 71Rs, and racing harness with no other mods. I used to spin out when I moved from an ASP Boxster S to the CTR even with full soft rear sway bar (RSB). I have been playing with RSB settings and tire pressures and have spent the last season and a half learning how to drive the CTR. This includes a test and tune at which I went from full soft to full hard RSB with constant tire pressures. Full stiff was by far the best. I have done most testing with long hold in +R mode; stability control fully off setting. Other settings cause weird braking effects. Front pressures are 31 psi front and 33 rear. The rears don't heat up much even on a hot day, but the fronts need spraying after several runs to cool them down. Yes the rear comes around, but is easily controllable by gentle application of throttle. Evidently, on a recent long decreasing radius sweeper (starting at about 50 mph) the inside rear lifted and stayed up for more than 100 feet (I was told). I really like the handling. Sometimes I can use the loose rear to position the car and to miss cones with the rear end. I plan on testing weight shifting methods (and my brain) at the Great River Region test and tune next Saturday. I am not usually the fastest PAXer, but do OK considering I am 67!
1599241177206.png
 

chi town brat

Senior Member
Joined
Jun 5, 2017
Messages
232
Reaction score
205
Location
FL
Car(s)
90 CRX Si. 91 STD Hatch. 92 CX Hatch. 17 CTR.
Country flag
Loose is faster. I'm not that driver. But I do enjoy not being the fastest 🏁🙂
 

jrow3

Member
First Name
John
Joined
May 20, 2019
Messages
26
Reaction score
25
Location
Fremont, CA
Car(s)
2019 Civic Type R
Country flag
Was able to get out to Cow Palace this weekend for some Autocross with the Golden Gate Lotus Club. Overall took 3rd in raw time, and I believe 3rd in pax (still waiting for indexed results to be posted).

Felt really happy with the balance of the car, and was very happy with the results this being my 5th event in the Type R. Was able to run three 37.0xx and two 36.8xx in the morning but felt like a 36.5 was possible with a little bit of clean up near the start. Afternoon fun runs managed three 36.8xx, a 36.6xx and hit my 36.5 target with a 36.465!

The start on this was pretty tight, which I think actually helped as I definitely need to work on my starts after feeling that was my biggest loss of time in the last few events.

Current Setup:
19" NSX Wheels
265/35/19 RE-71R
31/33 Front/Rear PSI
Karcepts 4 hole RSB set to 3/2
Borla catback exhaust

(New GoPro mount that doesn't wiggle like crazy is in the mail so hopefully future videos don't look like your drunk)
 

David Price

Member
First Name
David
Joined
Feb 8, 2019
Messages
17
Reaction score
18
Location
iOWA
Car(s)
2019 CTR
Country flag
Was able to get out to Cow Palace this weekend for some Autocross with the Golden Gate Lotus Club. Overall took 3rd in raw time, and I believe 3rd in pax (still waiting for indexed results to be posted).

Felt really happy with the balance of the car, and was very happy with the results this being my 5th event in the Type R. Was able to run three 37.0xx and two 36.8xx in the morning but felt like a 36.5 was possible with a little bit of clean up near the start. Afternoon fun runs managed three 36.8xx, a 36.6xx and hit my 36.5 target with a 36.465!

The start on this was pretty tight, which I think actually helped as I definitely need to work on my starts after feeling that was my biggest loss of time in the last few events.

Current Setup:
19" NSX Wheels
265/35/19 RE-71R
31/33 Front/Rear PSI
Karcepts 4 hole RSB set to 3/2
Borla catback exhaust

(New GoPro mount that doesn't wiggle like crazy is in the mail so hopefully future videos don't look like your drunk)
Nice run! It may have been quicker to shift going into the first left while you were braking. Acceleration would have still been good due to less wheel spin and you wouldn't have lost the time for the shift in the straight. Looking at Solo Storm after some of my runs it is easy to see the time lost on shifting if it is done on a straight.
 

Mcsinc

Member
First Name
Wayne
Joined
Apr 20, 2019
Messages
5
Reaction score
0
Location
Kelowna
Car(s)
2004 S2000, 2011 Subaru STI
Country flag
For those running 265/35/19, What is the rationale for choosing This over 255/35/19? Taller = faster for any given rpm? Taller sidewall = more flex. Also, weight on bridge stones website says the 255/35 @ 22 lb vs 265/35 @ 27 lb. 22 seems incorrect compared to the other 19” re71s... I’m sure someone out there has weighed both ...
 

AjHawk

Member
First Name
AJ
Joined
Sep 11, 2019
Messages
26
Reaction score
14
Location
Pittsburgh
Car(s)
2018 Honda Civic Type-R
Country flag
I run the 265 because I want the extra MPH at the top of 2nd gear, and I want the most tread width possible. Because it’s an RE71 with a stiff sidewall, it still feels responsive. I would not do the same with a BFG Rival.
Also, my TR screen shows the weights as 26 and 27 respectively.
 

jrow3

Member
First Name
John
Joined
May 20, 2019
Messages
26
Reaction score
25
Location
Fremont, CA
Car(s)
2019 Civic Type R
Country flag
I also went with 265, but mostly for the extra grip. The weight is minimal, and a few others have commented that 275/285 actually starts to muddle the feedback and they prefer the 265.

I guess theoretically the 265 also has a higher top speed, though that didn't play into my decision even though I do often find myself topping out 2nd, but not having enough room for 3rd.
 

Mcsinc

Member
First Name
Wayne
Joined
Apr 20, 2019
Messages
5
Reaction score
0
Location
Kelowna
Car(s)
2004 S2000, 2011 Subaru STI
Country flag
Thanks for the info. Yes I see on the TR website that the 255 is 26 not the 22 listed on the Bridgestone site. I wish they were only 22! Lol
 

Advertisement












Advertisement


Top