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Search: Posts Made By: Jake951
Showing results 1 to 25 of 497
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Forum: 997 GT2/GT3 Forum
11-14-2022, 07:32 PM
Replies: 27
Views: 2,435
Posted By Jake951

The "normal" range in my 997.1 GT3 is 220F to...

The "normal" range in my 997.1 GT3 is 220F to 250F. It reaches the high end of the range on hot summer days (90+ degrees). The highest oil temperature I ever saw was 260F on a day when the ambient...
Forum: 997 GT2/GT3 Forum
09-02-2022, 08:29 PM
Replies: 24
Views: 7,441
Posted By Jake951

I've been using OS Giken in my '07 GT3 for years....

I've been using OS Giken in my '07 GT3 for years. Absolutely no issues or complaints. It works great.
Forum: Racing & Drivers Education Forum
08-30-2022, 08:11 PM
Replies: 81
Views: 39,524
Posted By Jake951

My experience with the AR-1 on my '07 GT3 is...

My experience with the AR-1 on my '07 GT3 is quite similar. Strangely, they do quiet down a bit after the first track day. I find the grip remains very consistent over many heat cycles, like the...
Forum: Racing & Drivers Education Forum
08-21-2022, 09:25 PM
Replies: 81
Views: 39,524
Posted By Jake951

Great comparison! I run the AR-1's now with my...

Great comparison! I run the AR-1's now with my 997 GT3 and have been pleasantly surprised how good they are on the track, especially for the money. But I have wondered about the CR-S for the very...
Forum: 997 GT2/GT3 Forum
08-14-2022, 10:40 PM
Replies: 16
Views: 975
Posted By Jake951

Try the Nanking AR-1. It's a 100TW tire that's...

Try the Nanking AR-1. It's a 100TW tire that's available in OEM 235/35/19 and 305/30/19 sizes. I started running them on my GT3 this year and I'm favorably impressed. The grip is similar to the NT-01...
Forum: Racing & Drivers Education Forum
07-18-2022, 09:03 PM
Replies: 14
Views: 1,217
Posted By Jake951

I've done all 3 of these things on my Cayman S...

I've done all 3 of these things on my Cayman S and my GT3, and they all make a difference, especially the reprogramming for the PCCB option. In my case, I found that braking hard from high speeds on...
Forum: Racing & Drivers Education Forum
07-11-2022, 01:12 PM
Replies: 30
Views: 3,013
Posted By Jake951

I was at the track yesterday (Club Motorsports in...

I was at the track yesterday (Club Motorsports in Tamworth, NH) and got some tire temperature data. I had an assistant waiting in the hot pits with a pyrometer, so we were able to get some data...
Forum: Racing & Drivers Education Forum
07-08-2022, 07:56 AM
Replies: 30
Views: 3,013
Posted By Jake951

Actually the photo was taken at about 20 heat...

Actually the photo was taken at about 20 heat cycles, but I ran the tires for another 10 heat cycles and they still had good grip. You're right about the Cup 2's--they have a very short heat cycle...
Forum: Racing & Drivers Education Forum
07-07-2022, 08:05 PM
Replies: 30
Views: 3,013
Posted By Jake951

The AR-1's in the two links you provided appear...

The AR-1's in the two links you provided appear to be showing a wear pattern very similar to mine! The deepest wear is just off the center of tires. In the photo in the second link, you can see this...
Forum: Racing & Drivers Education Forum
07-07-2022, 06:26 PM
Replies: 30
Views: 3,013
Posted By Jake951

I've tried higher pressures, up to 35 psi, but...

I've tried higher pressures, up to 35 psi, but the wear pattern is still pretty much the same. The only concern about the wear is the cording that will occur when the tread is worn through. Otherwise...
Forum: Racing & Drivers Education Forum
07-07-2022, 06:19 PM
Replies: 30
Views: 3,013
Posted By Jake951

The right side of the photo above is the outside...

The right side of the photo above is the outside of the tire, so the wear is concentrated in a ring that's to the outside of center.
Forum: Racing & Drivers Education Forum
07-07-2022, 06:17 PM
Replies: 30
Views: 3,013
Posted By Jake951

I think the next step is to measure hot tire...

I think the next step is to measure hot tire temperatures and see what's going on across the tire. I don't think it's a simple case of understeering because that would affect the front tires. ...
Forum: Racing & Drivers Education Forum
07-07-2022, 04:12 PM
Replies: 30
Views: 3,013
Posted By Jake951

I should also mention that before running the...

I should also mention that before running the AR-1's, I had Sport Cup 2's with the same car setup. The Sport Cups never did this. I think it's something specific to the Nankings.
Forum: Racing & Drivers Education Forum
07-07-2022, 12:33 PM
Replies: 30
Views: 3,013
Posted By Jake951

Strange tire wear on Nanking AR-1

I've started using Nanking AR-1's as track tires this season. Now that I've accumulated a good number of track miles, I'm seeing some strange wear patterns on these tires. Take a look at the circled...
Forum: Racing & Drivers Education Forum
06-10-2022, 03:51 PM
Replies: 1
Views: 327
Posted By Jake951

Question for Nanking AR-1 users

I'm running a set of AR-1's for the first time. So far I'm liking them pretty well as a drive-to-the track tire compared to the alternatives that I've tried before. They seem similar to NT01's. After...
Forum: Racing & Drivers Education Forum
04-11-2022, 10:43 AM
Replies: 49
Views: 18,949
Posted By Jake951

The AR-1's are very loud on the street. I would...

The AR-1's are very loud on the street. I would suggest ear plugs for a long trip, which is what I do.
Forum: Racing & Drivers Education Forum
04-01-2022, 09:37 PM
Replies: 49
Views: 18,949
Posted By Jake951

I'm about to try out the AR-1's on the track in...

I'm about to try out the AR-1's on the track in my '07 GT3. What hot pressures are you guys running with this tire?
Forum: Racing & Drivers Education Forum
12-13-2021, 10:49 AM
Replies: 60
Views: 7,142
Posted By Jake951

For track tire ratings, check out this tire guide...

For track tire ratings, check out this tire guide (https://grassrootsmotorsports.com/articles/track-tire-buyers-guide/). There is a lot of good info there. Keep in mind, it's only one opinion but...
Forum: Racing & Drivers Education Forum
11-19-2021, 03:45 PM
Replies: 49
Views: 18,949
Posted By Jake951

Check out the tire ratings here:...

Check out the tire ratings here: https://grassrootsmotorsports.com/articles/track-tire-buyers-guide/. There are many tires compared here but as always YMMV. The Nanking AR-1 gets a decent rating for...
Forum: Racing & Drivers Education Forum
08-10-2021, 07:37 PM
Replies: 13
Views: 914
Posted By Jake951

To pass at LRP, I have to install baffles in the...

To pass at LRP, I have to install baffles in the exhaust to quiet it down. The baffles make quite a difference in sound.
Forum: Racing & Drivers Education Forum
08-10-2021, 04:33 PM
Replies: 14
Views: 2,450
Posted By Jake951

Goodyear Eagle F1 Supercar 3R for 997 GT3

I'm looking at the Goodyear Eagle F1 Supercar 3R as a track tire for my '07 GT3. The few comments and reviews I could find on these tires are very positive. They are available in 19" 997 GT3 sizes:...
Forum: Racing & Drivers Education Forum
08-10-2021, 04:22 PM
Replies: 13
Views: 914
Posted By Jake951

I don't want to say that the track doesn't...

I don't want to say that the track doesn't enforce sound limits. However, my car has a race exhaust that's loud and I never get black flagged. Same for other cars that are even louder than mine. ...
Forum: 997 GT2/GT3 Forum
08-04-2021, 08:12 PM
Replies: 9
Views: 4,603
Posted By Jake951

Anyone tried Goodyear Eagle F1 Supercar 3R?

I'm looking at the Goodyear Eagle F1 Supercar 3R as a possible track tire. It's available in 19" GT3 sizes (235/35/19 and 305/30/19). I'm currently using the Sport Cup 2's. The car is mostly a...
Forum: Racing & Drivers Education Forum
07-22-2021, 03:24 PM
Replies: 10
Views: 2,473
Posted By Jake951

Vision Motorsports built the engine so it's going...

Vision Motorsports built the engine so it's going back to them for a teardown and evaluation. Assuming the engine is rebuildable, I'm going to ask them about adding the Chris Cervelli dry sump kit....
Forum: Racing & Drivers Education Forum
07-21-2021, 07:59 AM
Replies: 10
Views: 2,473
Posted By Jake951

I'm seeing oil pressure drop to 7 psi in the...

I'm seeing oil pressure drop to 7 psi in the sustained high g corners, very similar to the 6 psi you saw. The oil pressure varies all over the place, from around 50 psi down to 7. It drops a lot in...
Showing results 1 to 25 of 497
 
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