Track forum general chit chat.

[slicer]

Originally Posted by Dreamer99

My NT01 tires are pretty much done and need to order some new tires. I have four 18x10 wheels and two 18x11 and I'm thinking of trying the Nankang AR1 tires. I have Ohlin R&T coilovers and I'm only 1/4" lower than stock ZCP.
My options are :

275/35/18 and 295/30/18 on 10 & 11 wheels
295/30/18 on 10 & 11 wheels
or 295/30/18 on 18x10 wheels all around?

265/35/18, 295/30/18 on 10/11

The 265/295 are very close to the same diameter while the 275 is taller than the 295. Not ideal.

If square I would definitely not put a 295 on a 10. That's too narrow for proper sidewall support. The AR1 runs narrow, but I would not go down to a 10. Instead 10.5 square is best for 295 square with the AR1.

If you have (4) 10" wheels already then I would do 275 square with AR1. Alternatively you could do a test. Buy (4) 265/35/18 for the 10's and a pair of 295 for the 11's. See which option you prefer (square or staggered). Keep in mind that car setup may need to be altered to maximize both options. The fact is that more rubber generally provides a bigger opportunity for more grip. It's just a matter of having the car setup to take advantage of it. In other words tire sizing is one of many ways to alter understeer/oversteer characteristics. Suspension settings, alignment settings, etc. can all influence.

[Dreamer99]

Originally Posted by slicer

265/35/18, 295/30/18 on 10/11

The 265/295 are very close to the same diameter while the 275 is taller than the 295. Not ideal.

If square I would definitely not put a 295 on a 10. That's too narrow for proper sidewall support. The AR1 runs narrow, but I would not go down to a 10. Instead 10.5 square is best for 295 square with the AR1.

If you have (4) 10" wheels already then I would do 275 square with AR1.

From reading the posts on here I got the impression that the AR1 runs a little narrow so thought the 275/295 combo might work.

I tried to get some A052 in 265/295 but they are sold out here in Canada.

[slicer]

Originally Posted by Dreamer99

From reading the posts on here I got the impression that the AR1 runs a little narrow so thought the 275/295 combo might work.

I tried to get some A052 in 265/295 but they are sold out here in Canada.

It's true they are narrow. It's the diameter that's the issue.

Here are few pics to illustrate:

10.5" wheel with a 265/35/18 AR1

RIA on 1M by slicerM, on Flickr




10.5" wheel with a 265/35/18 A052

A052 by slicerM, on Flickr


10.5" wheel with a 295/30/18 AR1

AR1 by slicerM, on Flickr


AR1 VS A052 by slicerM, on Flickr

[Bartledoo]

I ran 295/30 AR-1 on square 18x10 and they were great. One of the fastest Ring E92 M3's did as well with favorable results.

[dparm]

Originally Posted by Kelse92

Out at the track today and discovered a blown front strut
Welp, time to send them off to KW to rebuild. Anybody know if they will revalve them for me while they’re at it? Or if they’ll only rebuild to their specs?

I believe only their competition kits can be re-valved.

[Kelse92]

Originally Posted by dparm

I believe only their competition kits can be re-valved.

I think that's probably right, but was hoping for a lucky break. I would love to have some custom valving done but in hindsight probably shouldn't have gone with KW's since there's basically nobody that will rebuild them other than KW themselves.
Got me through the day at least, its not bad but definitely signs of failure with fluid coming out of the top adjuster.

[SonnyJack]

Originally Posted by SYT_Shadow

Usually the GTx cars get attracted to the wall as if they were magnets.
It looks like he didn't have the nannies on! Amazing. A driver of the most perfect sports car on the planet actually driving a car instead of the car doing everything for the driver? Heresy!!!

What you actually have here is some poor bastard who bought into the midengined Porsche mantra and actually trying to drive it without all the nannies finding out that midengined cars are a bitch to drive moderately fast

Witnessed this magnetism first hand yesterday! Felt bad for the guy. I was entering the pits and my video catches him begin to get sideways exiting turn 10 @ Summit Point Main. He then leaves the frame and there is a large eruption of dirt into the air as he hits the inside wall. Car was in bad shape.

[turbo_joe]

Originally Posted by SonnyJack

Witnessed this magnetism first hand yesterday! Felt bad for the guy. I was entering the pits and my video catches him begin to get sideways exiting turn 10 @ Summit Point Main. He then leaves the frame and there is a large eruption of dirt into the air as he hits the inside wall. Car was in bad shape.

I was maybe 5-10 seconds behind him, I came around T-10 as they tossed up the red flag and the track was covered in a cloud of dirt. The car is pretty messed up. GT4 owner was pitted next to me, I asked him what happened and he said he went wide on T-10 dropping a tire off track, kicked the car sideways then it shot straight towards the wall.

Luckily he walked away with nothing but a couple scratches and a severely bruised ego.

What happened with your car? I saw you get pulled in during session 3

[tsk94]

Originally Posted by Kelse92

I think that's probably right, but was hoping for a lucky break. I would love to have some custom valving done but in hindsight probably shouldn't have gone with KW's since there's basically nobody that will rebuild them other than KW themselves.
Got me through the day at least, its not bad but definitely signs of failure with fluid coming out of the top adjuster.

KW can probably rebuild them for you with different valving if you want. The entry level, off the shelf, competition setup for the E92 M3 from KW is basically a CS that's revalved. I'm sure they could revalve your CS's for you.

If you want I can give you contact info for someone at KW USA that I dealt with for my competition setup. I'm sure he can let you know if they can revalve your CS's, the cost and what options are available. Just send me a PM and I'll send over his contact info if you want it.

[SonnyJack]

Originally Posted by turbo_joe

I was maybe 5-10 seconds behind him, I came around T-10 as they tossed up the red flag and the track was covered in a cloud of dirt. The car is pretty messed up. GT4 owner was pitted next to me, I asked him what happened and he said he went wide on T-10 dropping a tire off track, kicked the car sideways then it shot straight towards the wall.

Luckily he walked away with nothing but a couple scratches and a severely bruised ego.

What happened with your car? I saw you get pulled in during session 3

Hey Joe,

Was great to meet you over the weekend. No matter what happens with my car at least I did not total a new GT4!

Even with the crazy slow traffic we had in our group I had been putting together some pretty consistent laps. Earlier I rode as a passenger in my original instructor's car and he re-explained the correct lines to me which made a huge difference. Also, for some unknown reason my methanol went out and I couldn't get it fixed so I was needing to throw in cool down laps every three or four laps. Coming out of turn two-three on lap 15 car went into neutral and I heard this rather horrible grinding/gravely/day's over sound. I managed to limp around to the bridge but that was it. Had to pull into the grass and get towed in.

Not sure exactly what went but it's got to be clutch/transmission related because the engine sounded fine but I couldn't engage any gears. Motor running and with or w/o clutch I could move the shifter into any gear but got nothing but RPM's, no movement. Dropping off at RRT tomorrow morning so we'll see what they say.

Gary

[Bartledoo]

Originally Posted by tsk94

KW can probably rebuild them for you with different valving if you want. The entry level, off the shelf, competition setup for the E92 M3 from KW is basically a CS that's revalved. I'm sure they could revalve your CS's for you.

If you want I can give you contact info for someone at KW USA that I dealt with for my competition setup. I'm sure he can let you know if they can revalve your CS's, the cost and what options are available. Just send me a PM and I'll send over his contact info if you want it.

Let us know the outcome either way Kelse92. Curious to know if this is possible.

[turbo_joe]

Originally Posted by SonnyJack

Hey Joe,

Was great to meet you over the weekend. No matter what happens with my car at least I did not total a new GT4!

Even with the crazy slow traffic we had in our group I had been putting together some pretty consistent laps. Earlier I rode as a passenger in my original instructor's car and he re-explained the correct lines to me which made a huge difference. Also, for some unknown reason my methanol went out and I couldn't get it fixed so I was needing to throw in cool down laps every three or four laps. Coming out of turn two-three on lap 15 car went into neutral and I heard this rather horrible grinding/gravely/day's over sound. I managed to limp around to the bridge but that was it. Had to pull into the grass and get towed in.

Not sure exactly what went but it's got to be clutch/transmission related because the engine sounded fine but I couldn't engage any gears. Motor running and with or w/o clutch I could move the shifter into any gear but got nothing but RPM's, no movement. Dropping off at RRT tomorrow morning so we'll see what they say.

Gary

Nice meeting you as well, hope you can get it all sorted out quickly.

Our group had a ton of traffic and way too big of a variety when it came to skill level. My best was sitting at consistent 1.25's for most of the weekend, wanted to be faster but the temps and traffic were not allowing it.

A few times I wanted to run the blue Mustang off the damn track, no clue how some of those drivers ever made it out of novice group.

[kayha12]

Yeah going wide at turn 10 is very scary, you use those violent gators on corner exit but I've definitely seen people who have not been able to pull their car back in time and drop a tire where that ends and this pretty much will guarantee a launch of your car into the inside tire wall - quite literally why that tire wall exists.

It's actually safer to let your car go off into the grass on the outside of 10, or track left of the front straight than try to yank it back in on time which will cause that tire drop to send your car to the inside of t10

[kayha12]

Love this teaser pic but it looks like I'm causing a train! lol it was the outlap... I swear

[turbo_joe]

Originally Posted by kayha12

Yeah going wide at turn 10 is very scary, you use those violent gators on corner exit but I've definitely seen people who have not been able to pull their car back in time and drop a tire where that ends and this pretty much will guarantee a launch of your car into the inside tire wall - quite literally why that tire wall exists.

It's actually safer to let your car go off into the grass on the outside of 10, or track left of the front straight than try to yank it back in on time which will cause that tire drop to send your car to the inside of t10

I have always been told to just ride it out, don't be a hero and try to save it. Especially at T-10.

This was also the third lap of the first session of his first day there, his tires were barely warmed up

[kayha12]

Originally Posted by turbo_joe

I have always been told to just ride it out, don't be a hero and try to save it. Especially at T-10.

This was also the third lap of the first session of his first day there, his tires were barely warmed up

Yep! That's correct.

Are you going to VIR with NASA MA Aug 1-2? Their postponed "hyperfest" dates

[turbo_joe]

Originally Posted by kayha12

Yep! That's correct.

Are you going to VIR with NASA MA Aug 1-2? Their postponed "hyperfest" dates

I have never done an event with NASA but I need to, I might look into that as my next event as I have none planned so far.

[kayha12]

Originally Posted by turbo_joe

I have never done an event with NASA but I need to, I might look into that as my next event as I have none planned so far.

Heck yeah, come on through. Usually at least a few other e9x there with

[dparm]

I always use the first few laps to develop an exit strategy for various points on the track. In a crisis, I will not have time to weigh my choices and make a rational decision. I do this even on tracks I've driven before because it's easy to forget and the conditions change.

99% of the time, it is safer to simply straighten the wheel and drive off into the grass. It was a tough habit for me to break -- instinctively going, "oh shit, better save it!" and instead doing a 180 across the track in traffic. I'd much rather end up with some grass in the radiator and a cracked splitter than getting T-boned by the guy behind me.

Just my two cents.

[XKxRome0ox]

Originally Posted by kayha12

Love this teaser pic but it looks like I'm causing a train! lol it was the outlap... I swear

can you post more photos of your car?
interested in seeing the full color scheme

[kyippee]

slicer Amazing pics you posted! Do you have width comparisons with toyo RR? I hear RR might be wider and it makes me a bit nervous. 295/30/18 on both sets. Won't be mounting the RR 'till late August

[SonnyJack]

Originally Posted by dparm

I always use the first few laps to develop an exit strategy for various points on the track. In a crisis, I will not have time to weigh my choices and make a rational decision. I do this even on tracks I've driven before because it's easy to forget and the conditions change.

99% of the time, it is safer to simply straighten the wheel and drive off into the grass. It was a tough habit for me to break -- instinctively going, "oh shit, better save it!" and instead doing a 180 across the track in traffic. I'd much rather end up with some grass in the radiator and a cracked splitter than getting T-boned by the guy behind me.

Just my two cents.

Had to do this at PittRace last year. Lost a front lip which was perfect for my brake ducts, but mowing 50 yds of grass sure was better than swerving across the track into a tire wall.